Fill in the blank with the most appropriate preposition: "The avionics upgrade complies fully _______ all international airworthiness certification directives."

(A) with

(B) to

(C) for

(D) by

Answer Key:

Verified in official key

### 1. Strategy & Theoretical Principles In standard English idiom and technical grammar: - The verb *"comply"* strictly collocates with the preposition *"with"* (*"comply with a rule/standard"*). - *"Adhere"* takes *"to"* (*"adhere to directives"*). - *"Abide"* takes *"by"* (*"abide by directives"*). ### 2. Option Evaluation - **with:** Correct collocation: *comply with*. - **to:** Incorrect collocation (used with *adhere*, *conform*). - **by:** Incorrect collocation (used with *abide*). ### 3. Exam Trap & Standard Reference - **Trap Alert:** Do not confuse *comply with* with *adhere to* or *abide by*. - **Standard Reference:** Murphy, R., *English Grammar in Use*, Cambridge University Press.

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