verbal review 2nd 16，逗号＋and＋独立句？

vetch

Iguanas have been an important food source in Latin
America since prehistoric times, and it is still prized as
a game animal bythe campesinos, who typically cook
themeat ina heavily spiced stew.
(A) it is still prizedas a game animal
(8) it is still prized as game animals
(C) they are still prized as game animals
(D) they are still prized as being a game animal
(E) being still prized as a game animal

答案是c。我明白考点是主谓一致的问题。但是，这样以来，就变成， lguanas have been ...., and they are prized ....  中间是逗号，岂不是变成逗号连接两个独立的句子？

fish2006

所以呢？

lglovebaobao

and是连词可以引导句子的     如果没有and就错了