A new phenomena, which is visible at Managua’s major intersections, are waves of vendors and beggars, which include many children and mob cars at the stoplights.

(A) A new phenomena, which is visible at Managua’s major intersections, are waves of vendors and beggars, which include many children and

(B) Visible at Managua’s major intersections are waves of vendors and beggars with many children, new phenomena that

(C) A new phenomenon visible at Managua’s major intersections is waves of vendors and beggars, many of them children, who

(D) Phenomenally new waves of vendors, beggars, and many children are visible at Managua’s major intersections, which（C）

(E) A wave of vendors and beggars, many of whom are children, are visible at Managua’s major intersections, where they are a new phenomenon and

请教C中的n（单数）is n（复数）这种结构对吗？

这种结构是没问题的

事实上 英文里面的主谓一致仅仅是针对主语和谓语的单复数一致 和后面的宾语并没有语法上的关系

尽管很多时候是有逻辑上的关系的

IS 后面跟的不是复述名词，而是这个现象 waves of vendors and beggars, which include many children and mob cars at the stoplights -大量的vendor和乞讨者聚集在stoplights附近

多谢。

还是有点迷惑，那句子的主谓宾是什么啊？