The best answer for this question would be:
D. That he feels like a failure as a man
On the given text the emotions that Walter puts explains how
he feels about himself, stating that “So you butchered up a dream of
mine—you—who always talking 'bout your children's dreams”
Answer:

Explanation:
9 x 9 x 9 x 9 is 9 multiplied by itself four times, so it's 9 to the 4th power as typed above.