Which part of a flower becomes a fruit? A. the anther
B. the ovary
C. the stigma
D. the pistil

Explanation:

Anther is where the pollen is released. It drops off from the flower after fertilization.

The stigma is where the pollen falls onto to move down through the pistil towards the ovary to fertilize the ovules.

Both the stigma and pistil drop off after fertilization. Only the ovary and ovules remain, where the ovary becomes the fruit and the ovules become the seeds. (B)