[求助]"much less remember"T!(不知题号,全真题)

eyda_c

Roy Wilkins was among the last of a generation of civi rights activists who led the nation through decades of change so profound many young Americans are not able to imagine, even less to remember, what segregation was like.

B) so profound that many young Americans cannot imagine, much less remember,

D) of such profundity that many young Americans are not able to imagine, much less to remember

为什么B对？less 指代young Americans, much 修饰less, 那么imagine和remember并列，就需要一个连词来连接，但是B中没有。难道是插入语or同位语？

求教！谢谢！

eyda_c

Please...

Thanks.

joe11

是插入语， 另外，D 的 profoundity 是抽象名词，不如 B.