In the majority of angiosperms

The correct option is D

reduction division occurs in the megaspore mother cells

The correct option is D.

Explanation for correct option:

1. Angiosperms are flowering plant that gives us fruits and seeds.
2. In Angiosperm, the megaspore mother cell divides by meiosis also called reduction division and gives rise to four megaspores. Only one megaspore gets converted into the embryo sac.

Explanation for incorrect answers:

Option A:

1. Antipodal cells are the three haploid cells in the embryo sac of the angiosperm and provide nutrition to the egg (female gamete).

Option B:

1. Eggs of the angiosperm do not have filiform apparatus. It's the synergids that have the thickening at the tip.

Option C:

1. The small central egg present in the embryo sac has two polar nuclei which after fertilization give rise to the endosperm of the seed.

Final answer: Megaspore mother cells divide by the meiosis and give rise to four haploid cells called megaspores.