2011 CSAT, all questionsPassage-III · as printed by UPSC 
UPSC Prelims 2011 · CSAT
Question 70: Reading Comprehension

Female polar bears give birth during
aspring
bsummer
cautumn
dwinter
UPSC published no Prelims answer keys before 2012.
Source: UPSC, Civil Services (Preliminary) Examination 2011, General Studies Paper II (CSAT), Series A. The paper on upsc.gov.in.