Direction: Choose the word that is closest in meaning (synonym) to the…

Concept: To find a synonym, identify the precise core meaning (denotation) of the underlined word, then match it to the option that shares that same core meaning, not just a related or opposite idea.

"Comprehensive" means covering all or nearly all parts, aspects, or details of something completely and thoroughly.

Application

The sentence states the lecture "covered every aspect of the topic" — this restates the core meaning of "comprehensive" directly: complete and thorough coverage of all parts. Among the four options, the word that shares this core meaning of covering all particulars fully is the correct match.

Cross-check

• "brief" denotes short duration or length — the opposite core meaning from covering every aspect, so it does not match.

• "confusing" denotes lack of clarity or difficulty in understanding — an unrelated quality to the extent of coverage, so it does not match.

• "ordinary" denotes being usual or unremarkable — also unrelated to the extent of coverage, so it does not match.

Substituting the matched option back into the sentence — "the lecture was so [thorough/full in detail] that it covered every aspect" — preserves the original meaning, confirming the match.