Correct option is A
The correct synonym of the given word is (a) scarcity.
• “Dearth” means a
shortage or lack of something (especially food, resources, opportunities). (Hindi meaning: कमी, अभाव)
• “Scarcity” also means a shortage or insufficient supply. (Hindi meaning: कमी, दुर्लभता)
• Hence, (a) matches the meaning best.
Meanings of the other options:
• (b) Exaggeration: making something seem larger/worse/better than it really is (बढ़ा-चढ़ाकर कहना)
• (c) Pettiness: small-mindedness; showing concern over trivial matters (छोटी सोच, क्षुद्रता)
• (d) Poverty: the state of being very poor (गरीबी)