The speaker in "birches" compares to the boy's climbing to

A. girls drying their hair
B. Sweeping up broken glass
C. a forest full of spiderwebs
D. filling a cup to the top

A. girls drying their hair

C. a forest full of spiderwebs

To determine the answer, we need to analyze the poem "Birches" by Robert Frost and identify the comparison being made by the speaker.

In "Birches," the speaker describes the act of climbing birch trees. This activity is used as a metaphor to convey deeper meanings. To find the answer, we need to examine the specific comparisons made by the speaker.

A. Girls drying their hair: In the poem, there is no explicit comparison made between the boy's climbing and girls drying their hair. Therefore, option A can be ruled out.

B. Sweeping up broken glass: Again, there is no mention or comparison between the boy's climbing and sweeping up broken glass in the poem, so option B is also incorrect.

C. A forest full of spiderwebs: The speaker does mention a visual similarity between the birch trees when bent by ice storms and a forest full of spiderwebs. However, this comparison does not relate to the boy's climbing, so option C is not the correct answer either.

D. Filling a cup to the top: This is the correct answer. In the poem, the speaker compares the boy's climbing to the act of filling a cup to the top. Just as reaching the top of the birch tree and bending it down allows the boy to experience a momentary transcendence or escape from reality, filling a cup to the top represents achieving maximum capacity or complete fulfillment.

Therefore, the speaker in "Birches" compares the boy's climbing to filling a cup to the top, which means the correct answer is option D.