Some people are bad at recalling names and faces, so it's possible that they have a condit

Some people are bad at recalling names and faces, so it's possible that they have a condition called face blindness, people suddenly have trouble recognizing family members, friends or even themselves．
A. for which
B. which
C. where
D. of which

A. for whichB. which(答案→)C. whereD. of which解析：考查从句，从句people suddenly have trouble recognizing family members, friends or even themselves句子不缺少成份，所以选where，句子意思“有些人不善于回忆名字和脸，这有可能是连忙正，那里的人们突然在认识家人、朋友和自己有困难”，所以选C

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