The following sentences, labelled 1, A, B, C and D, form a coherent paragraph when arranged in the correct order. Sentence 1 is fixed as the first sentence. Choose the most logical order of the remaining sentences. 1) For first-time Indian travellers, stepping out of the airport in Singapore or Japan is a momentous, potentially mindset-changing experience.

Introduction / Context:
Para jumble questions test your ability to arrange jumbled sentences into a logical, coherent paragraph. In this item, Sentence 1 is fixed, and four other sentences labelled A, B, C and D must be ordered. The topic concerns Indian travellers comparing cleanliness abroad with conditions at home. Understanding the logical flow of ideas, connectors, and pronouns is essential for choosing the correct sequence from the options BCAD, DCBA, DBCA, and ADBC.

Given Data / Assumptions:

• Sentence 1: For first-time Indian travellers, stepping out of the airport in Singapore or Japan is a momentous, potentially mindset-changing experience.
• D: How can bustling cities packed with people be so spotless? As far as the eye can go, there is not a single piece of stray paper on the road or in public transport.
• C: How does that compare with our paan-stained buses filled with peanut shells?
• B: Public littering is a social issue that results in massive aesthetic, financial and health-related costs for India. It is not as if we do not value cleanliness. Our homes are the textbook definition of clean.
• A: But walk in a cramped gully in Delhi or even on the main road and everything that is not desirable inside, finds its way outside.
• We must keep 1 as the opener and arrange D, C, B, A afterwards.

Concept / Approach:
The paragraph begins with the experience of seeing extremely clean foreign cities. The next logical step is to express the surprise and questions that arise from this experience, then contrast it with Indian conditions, and finally explain the deeper social issue and contradiction between clean homes and dirty streets. Sentence D directly continues the idea in 1 by asking how such crowded cities can be spotless. Sentence C then draws a direct comparison with Indian buses. Sentence B broadens the point into a general statement about public littering in India and notes that Indians do value cleanliness in their homes. Sentence A then provides a specific picture of dirty gullies and roads outside those clean homes. This produces the coherent sequence 1 D C B A, which corresponds to option DCBA.

Step-by-Step Solution:
Step 1: Identify the natural successor to Sentence 1. Since 1 describes a mindset-changing experience of cleanliness abroad, Sentence D, which asks How can bustling cities packed with people be so spotless?, directly follows up with a reaction question. Step 2: After describing spotless foreign cities in D, Sentence C logically brings in a comparison: How does that compare with our paan-stained buses...? The pronoun that refers back to the spotless cities in D. Step 3: Once the comparison is set, Sentence B generalises the issue: Public littering is a social issue..., and then contrasts public spaces with clean homes: Our homes are the textbook definition of clean. Step 4: Finally, Sentence A gives a concrete visual of how things that are not desirable inside are thrown outside, linking back to the mention of clean homes in B. Step 5: Combine the order after 1 as D C B A, which matches option DCBA.

Verification / Alternative check:
Test the full paragraph in the sequence 1 D C B A: After first-time travellers see clean foreign cities (1), they wonder how such dense cities stay spotless (D). Then the paragraph asks how this compares with messy paan-stained Indian buses (C), leading to a general statement about public littering in India and the contrast with clean homes (B). It ends by explaining that all the undesirable things from clean homes end up in dirty gullies and roads (A). This flow is smooth and logical. Other sequences break key references: for example, starting with B after 1 neglects to fully describe the foreign setting before jumping to Indian littering, while putting A before B reverses the explanation and the example, weakening coherence.

Why Other Options Are Wrong:
BCAD: This is wrong because B jumps into public littering in India immediately after 1 without first completing the description of spotless foreign cities, and it does not smoothly introduce the comparison question in C.
DBCA: This order places B before A but then ends with A, which works, yet it incorrectly puts C last, breaking the immediate comparison link between D and C.
ADBC: This is wrong because A describes Indian gullies straight after 1, skipping the complete description of spotless foreign cities and the reactionary questions in D and C, which reduces coherence.

Common Pitfalls:
Students often rely solely on local connectors like but and however without looking at pronoun references such as that in C or thematic development across the paragraph. Another pitfall is choosing an order where the general statement (B) comes before the specific comparison (C), weakening the logical build up. To avoid these errors, always look for sequences where pronouns have clear antecedents and where the text moves from description to comparison to generalisation and finally to illustrative examples in a smooth flow.

Final Answer:
The most logical order of the sentences after 1 is DCBA, so the correct option is DCBA.