"Of wolves and men" it´s a book written by Barry Lopez and originally published in 1978. The book analyze the relationship between the wolves and the culture of men and how it is based on a wide spectrum that runs from fear to admiration and afection. In the novel the author describes wolves as Complex creatures (C) to inspire awe and love for it.
"Birches" is a poem written by the american author Robert Frost. I t was included in his third collection of poetry named "Mountain Interval" which was published in 1916. It´s one of Robert Frost´s more anthologized poem and shows him as a nature poet.
In the poem the speaker compares the boy´s climbing to filling a cup to the top because of the pain it is used to perform both actions (D).
"To the top branches, climbing carefully
With the same pains you use to fill a cup"
He used the phrase "shed crystal shells" to describe the ice cracking of the trees after the sun warm and melt it after an ice-storm (B).
"As ice-storms do. Often you must have seen them
Loaded with ice a sunny winter morning
After a rain. They click upon themselves
As the breeze rises, and turn many-colored
As the stir cracks and crazes their enamel.
Soon the sun's warmth makes them shed crystal shells"
I hope the answer help you. I copy some parts of the poem that I think reafirm the selections of the multiple choice. If you have any doubt do not hesitate to ask it. Regards.