The correct answer is C: tranquil. Turbulent means characterized by conflict, disorder, or confusion; not stable or calm. The opposite would convey peace or calmness.
A.capricious
B.desolate
C.tranquil✓ Correct
D.obstreperous
Explanation
Turbulent means characterized by conflict, disorder, or confusion; not stable or calm. The opposite would convey peace or calmness. Capricious means unpredictable, desolate means deserted, and obstreperous means noisy and unruly — none of these are antonyms of turbulent. 'Tranquil' means free from disturbance, calm, and peaceful, which is the direct opposite of turbulent. Therefore, 'tranquil' is the correct antonym.
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