'Kill two birds with one stone' means
ACarry two heavy stones at one go
BHunt birds in the forest for sport
CThrow two stones at flying birds
DAchieve two goals with one effort
Answer & Solution
Correct answer: D. Achieve two goals with one effort
1. Idiom: one action achieves two goals.
2. Literal hunting is the trap.
3. Hence option A.
_Source: jkchrome.com SSC Idioms and Phrases PDF (Mistral OCR), section on common idioms_