The subway was crowded with passengers going home from market, most of carrying heavy bags

The subway was crowded with passengers going home from market, most of carrying heavy bags and baskets full of fruits and vegetables they had bought there.
A. whom
B. them
C. who
D. which

A. whom(答案→)B. themC. whoD. which解析：考查独立主格结构：句意：地铁上挤满了从市场回家的人，大多数人手上提着装满从市场买的水果蔬菜的包和篮子。逗号前面是完整的句子，后面carrying是非谓语，说明并不是非限制性定语从句，而是独立主格结构。逻辑主语+非谓语动词carrying，在句中做状语。选B。

哦，回答的不错