Topic: Antonyms, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The word "extraneous" refers to something that is not essential or is irrelevant to the matter at hand. It suggests a lack of connection or appropriateness. In contrast, the antonym "pertinent" describes information or elements that are directly related or relevant to the subject being discussed. When something is pertinent, it contributes valuable context and meaning, aligning closely with the needs of the situation or inquiry.

To further clarify the choice, let’s analyze the other options:

- **B) intertwined** implies that things are closely connected or linked, which doesn’t directly relate to the notion of being essential or relevant.
- **C) boorish** describes a lack of refinement or good manners, which is unrelated to the relevance of information.
- **D) ravenous** refers to extreme hunger and does not apply to concepts of relevance or connection.

Therefore, the best fit as an antonym for "extraneous" is "pertinent," as it embodies the essence of relevance and applicable value, contrasting sharply with the idea of being extraneous.