In the following question, a sentence is divided into four parts. Identify the part that contains a grammatical or word-usage error, or select 4 if there is no error: Jaitely announced a waivered of the service charge (1)/ on e-tickets and spoke about a number of steps (2)/ to improve passenger amenities (3)/ such as a ‘‘coach mitra’’ facility. (4)

Introduction / Context:
This question tests both grammar and correct word formation in English. The sentence talks about Jaitely announcing changes to a service charge on e-tickets and introducing steps to improve passenger amenities. You have to locate the part containing an incorrect word form or grammatical error, or choose 4 for No error if the sentence is entirely correct.

Given Data / Assumptions:
- Sentence parts:
- (1) Jaitely announced a waivered of the service charge
- (2) on e-tickets and spoke about a number of steps
- (3) to improve passenger amenities
- (4) such as a ‘‘coach mitra’’ facility.
- The sentence should describe a waiver of a service charge, which is a common financial term.

Concept / Approach:
The main concept here is choosing the correct noun form. In financial and legal usage, waiver is the noun that refers to the act of giving up a claim or charge. Waived is a verb (past tense) and waived off is a common expression. Waiver is not normally written as waivered. The structure a waivered of the service charge is therefore incorrect; it should be a waiver of the service charge or he waived the service charge. The other parts simply expand information and appear grammatically sound.

Step-by-Step Solution:
Step 1: Examine part (1): Jaitely announced a waivered of the service charge. The phrase a waivered is not standard English.Step 2: Identify the correct word. As a noun, the proper term is a waiver of the service charge, meaning an official cancellation of the charge.Step 3: Replace waivered with waiver to produce the correct phrase: Jaitely announced a waiver of the service charge.Step 4: Check part (2): on e-tickets and spoke about a number of steps. This is grammatically correct and logically consistent.Step 5: Part (3): to improve passenger amenities is a correct infinitive phrase describing the purpose of the steps.Step 6: Part (4): such as a ‘‘coach mitra’’ facility correctly introduces an example of the amenities.Step 7: Only part (1) contains the wrong word form, so option 1 is the correct answer.

Verification / Alternative check:
To verify, rewrite the full corrected sentence: Jaitely announced a waiver of the service charge on e-tickets and spoke about a number of steps to improve passenger amenities such as a ‘‘coach mitra’’ facility. This sentence is grammatically sound and uses the correct technical term waiver. If we attempted to adjust other parts instead, we would break otherwise correct grammar or distort the meaning. Therefore, the only real error comes from the incorrect word waivered in part (1).

Why Other Options Are Wrong:
- Part (2) on e-tickets and spoke about a number of steps is a correct and natural continuation.
- Part (3) to improve passenger amenities expresses purpose clearly.
- Part (4) such as a ‘‘coach mitra’’ facility correctly introduces a specific example.
- Since part (1) definitely contains a wrong form, No error cannot be correct.

Common Pitfalls:
Learners sometimes create incorrect forms by adding -ed to nouns that already have a fixed shape, for example saying *refunded for refund or *waivered for waiver. Another problem is confusing verb phrases like waived off the charge with noun phrases like a waiver of the charge. To avoid these mistakes, you should pay attention to standard collocations in newspapers, financial documents and official announcements. Remember that in noun position after a, you generally need a standard noun like waiver, not an invented form.

Final Answer:
The incorrect segment is part 1. The phrase should read Jaitely announced a waiver of the service charge, not a waivered of the service charge.