Select the most appropriate synonym of the given word.
TRANQUIL

Correct option is B

The correct synonym of the given word is (b) sober.
Tranquil: Calm, peaceful, and quiet. (Hindi: शांत, स्थिर)
Example: The lake looked tranquil in the early morning light.
Sober: Serious, calm, and thoughtful; not drunk. In context, it matches "calm and composed" sense. (Hindi: शांतचित्त, गंभीर)
Example: Despite the chaos, his tone was sober and measured.
Synonyms: calm, serene, peaceful, composed.
Antonyms: chaotic, nervous, agitated, disturbed.
Meanings of other options:
· (a) Nervous: anxious or worried (चिंतित, घबराया हुआ)
· (c) Ill-tempered: easily angered (गुस्सैल)
· (d) Worried: troubled about problems (चिंतित)