I think the correct answer would be B)
I think it’s C sorry if I’m wrong.
As the pollen tube penetrates the ovule, it releases two sperm cells. ... As in gymnosperms, the ovule becomes a seed, encasing the embryo and endosperm in a seed coat. But unlike gymnosperms, in angiosperms the ovary containing the ovules develops into a fruit after fertilization
The force is gravity. Two masses will always attract towards each other
I'm not sure but but i think the answer will be:
A. additive genetic variance times the selection differential.