acoustics
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(of a word or phrase) suggesting that someone is of little value
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servile flatterer
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science of sound
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unpleasant high sharp sound
Reveal answer
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C
Correct answer
Explanation
Acoustics is the branch of physics that deals with the study of sound, including its production, transmission, and effects. The other options describe unrelated concepts.
AI explanation
'Acoustics' refers to the branch of physics/science dealing with the properties and behavior of sound, matching option 3. The other definitions describe unrelated words: a dismissive/diminishing phrase would relate to something like 'pejorative,' a servile flatterer describes a 'sycophant,' and an unpleasant sharp sound would be 'shrill' or 'screech' — none define 'acoustics' itself.