The fact that wolf populations returned to Glacier National Park can be explained by the entry in the timeline for A. 1978.
B. 1986.
C. 1994.
D. 2012​

C. 1994.

Explanation:

the correct answer is c. he speculates on what might happen at given points in the future in a world without people. alan h. weisman is an american author, professor, and journalist. authors organize their information with a purpose. they present their ideas in an organized way. this is called text structure. weisman uses text structure so as to improve overall comprehension and to prove his points.

answer: do

the 'italicized phrase' is a noun clause that is used as a direct object.