What is the primary purpose of the detailed descriptions Barry Holstun Lopez in the excerpt from Of Wolves and Mens?
A. to inform the reader about what the forest is like from wolf's perspective
B. to persuade the reader that people should work to conserve unspoiled land in Canada
C. to express the authors personal feelings about the beauty of the artic forests
D. to entertain the reader with a fast-paced description of how a wolrf hunts a caribbou