The plumule is the part of the seed embryo that develops into the shoot of the plant. It is the region that contains the stem and leaves, and it will eventually grow upward when the seed germinates.

Here’s a breakdown of the other options:

A. Part of the cotyledon – The cotyledon is the seed leaf, not the plumule.

B. Part of the endosperm – The endosperm provides nourishment to the developing embryo, but it is not the plumule.

D. Structure near the micropyle – The micropyle is the opening in the seed through which water enters during germination, not directly related to the plumule.

E. Structure opposite the hilum – The hilum is the scar on the seed where it was attached to the ovary wall, and it’s not directly associated with the plumule.