Question

Question was provided via image upload.

Explanation:

The resolution shows Kaguya's unseen aid pulling Benigoi upward past the waterfall, which was his lifelong dream of reaching the chisen's source. This directly fulfills his goal through her help, tying to the theme of achieving one's dream with support. Option A is unsupported, as there's no mention of helping other koi. Option C is incorrect, as Benigoi's dream (reaching the falls) didn't change. Option D is wrong, as the focus is on Benigoi's achievement, not Kaguya's lessons learned.

Answer:

B. by showing how Kaguya helps Benigoi achieve his dream