Select the word that best expresses the meaning of the underlined word. He…

Concept: In a synonym question you choose the option whose meaning is closest to the target word in the given context. The word ‘pertinent’ describes something that applies to and bears directly on the matter being discussed — to the point and materially useful.

Application: The sentence says the remarks ‘would certainly help us revise the project.’ A remark that genuinely helps revise the work must apply directly to it. The single word that names this quality — applicable to and bearing on the subject — is ‘Relevant’, the standard dictionary equivalent of ‘pertinent’.

Why the other words fall short:

• ‘Thoughtful’ describes the care or reflection behind a remark — a quality of the speaker, not of its bearing on the topic.

• ‘Applied’ means put to practical use; it speaks to how something is used, not to its meaning.

• ‘Related’ conveys only a loose, general association, weaker and vaguer than the precise force of ‘pertinent’.

Therefore the best synonym is ‘Relevant’.