John James Audubon is renowned for his detailed illustrations of American birds, but he was also a keen observer of mammal behavior. He documented the lives of viviparous quadrupeds in North ______ detailed plates of species ranging from squirrels to bison.
Which choice completes the text so that it conforms to the conventions of Standard English?
America; producing
America producing
America, producing
America. Producing
Correct Answer: C
Choice C is the best answer. The participial phrase "producing detailed plates..." functions as a modifier that elaborates on the action of the main clause ("He documented..."). A comma is the standard punctuation used to separate a main clause from a supplementary participial phrase.