My most famous relative of all, who really left his mark on America, was Reb Sussel, my great-grandfather.
A. one
B. the one
C. he
D. someone
网友回答
A. one
(答案→)B. the one
C. he
D. someone
解析：
考查替代词。由语境可判断是特指，且作My most famous relative of all的同位语，用the one。