|Question 20Verbal

Source Texts

Text
Jeffery Renard Allen's short essay on "backwall," a word referring to the cliff at the head of a glacier-carved valley, is included in the collection Home Ground: A Guide to the American Landscape. The book wasn't written solely by [blank] other authors, such as Carolyn Servid and Barry Lopez, also contributed essays.
Which choice completes the text so that it conforms to the conventions of Standard English?
Allen; however,
A
Allen, however;
B
Allen. However,
C
Allen, however,
D