【题目】Many young people, most ______ were well-educated, headed for remote regions to chase their dreams.
A.of which
B.of them
C.of whom
D.of those

【答案】C
【解析】考查定语从句。本题定语从句的先行词是Many young people，关系代词whom指代先行词，在定语从句中作为of的宾语。句意：很多年轻人都前往偏远地区追求他们的梦想，期中大部分人都是受过良好教育。故C正确。