Identify the part (A–E) that contains a grammatical error in the sentence below. If there is no error, choose option E (No error). Sentence (split into parts): A) Pramod said that B) he prefers a white shirt C) to coloured one D) on any festival occasion.

Introduction:
This question checks article usage with countable singular nouns inside a comparative preference structure ("prefer X to Y"). The error is the missing article before "coloured one".

Given Data / Assumptions:

• Main reporting clause: "Pramod said that…".
• Habitual preference in present: "he prefers".
• Contrast pair: "a white shirt" vs "a coloured one".
• Time/occasion adverbial: "on any festival occasion".

Concept / Approach:
When contrasting singular countables with "one", an article is required to mirror the first noun phrase: "a coloured one". Therefore, "to coloured one" is ungrammatical. Tense sequence is acceptable because "said" + "prefers" represents a general truth reported from the speaker’s perspective.

Step-by-Step Solution:
1) Identify contrasted NPs: "a white shirt" vs "coloured one".2) Insert needed article: "a coloured one".3) Keep "prefer X to Y" structure intact.4) The rest of the sentence needs no change.

Verification / Alternative check:
Variant: "…he prefers white shirts to coloured ones on festival occasions." Number agreement then requires "shirts/ones".

Why Other Options Are Wrong:
A: Reporting verb is fine.B: Correct present simple expressing habitual preference.D: Acceptable adverbial phrase, though "on festivals" is more idiomatic.

Common Pitfalls:
Forgetting to repeat the article before "one/ones" when contrasting singular items.

Final Answer:
C (Write: "to a coloured one")