Introduction / Context:
The test here is correct prepositional collocation with “difference” and the preposition used to introduce the cause/topic. In standard English one says “have a difference of opinion with someone over/about a statement”. The phrase “at his statement” is unidiomatic.
Given Data / Assumptions:
- Speaker disagreed with the chairman about a statement.
- Structure used: “a difference … with … at his statement”.
- Collocation requires “of opinion” and “over/about”.
Concept / Approach:
- Common patterns: “a difference of opinion with X over/about Y”.
- Preposition “at” signals location or reaction; it is not used to mark the topic of disagreement.
Step-by-Step Solution:
Replace incorrect preposition and add the missing collocation.Correct phrasing: “He had a difference of opinion with the chairman over his statement.”Alternatively: “He disagreed with the chairman about his statement.”
Verification / Alternative check:
Consult patterns with “difference”: “difference in price”, “difference between A and B”, “difference over an issue”. Only “over/about” fits here.
Why Other Options Are Wrong:
A–C: Acceptable as parts of the reporting clause.E: Incorrect because D contains a collocation/preposition error.
Common Pitfalls:
Using “at” to introduce causes in formal English; omitting “of opinion” in the idiom and ending up with an awkward phrase.
Final Answer:
the chairman at his statement.
Discussion & Comments