Answer:
The answer is option D.
Explanation:
For this question, the four options are part of the Grice's Maxims. As part of them, maxim of manner refers to a situation when a person avoids ambiguity by expressing their ideas as clearly and orderly as possible. In this case, Allen mentions a part of the project, but it doesn't specify what it is and the use of pronouns in his speech is ambiguous, so option D is the correct answer.
