Select the most appropriate word that can substute the underlined word in the given sentence without altering the sentence's meaning.
The professor’s lecture on quantum mechanics was as enlightening as it was challenging.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. illuminating.
Given word: Enlightening
Meaning: Giving greater knowledge or understanding about a subject.
Example: The documentary was very enlightening and helped me understand climate change better.
Synonym – Illuminating
Meaning: Making something clear and easy to understand; giving intellectual or spiritual light.
Example:
His explanation about the universe was truly illuminating.
Meaning of the other words:
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Dull: not interesting or lively; boring.
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Perplex: to confuse or puzzle someone.
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Confusing: not easy to understand; causing uncertainty.
Hence, the chosen option will be correct.