Answer:
A
Explanation:
The speaker's forehead is described as a wall, which probably means that he has a high forehead and that it is probably a very visible forehead that seems to rise above the rest of the face like an imposing wall would rise above a landscape.
The eyes are described as caves, which means that they were probably dark in color and significantly inset into the head. Having deep eye sockets would give the impression of having eyes at a great distance from the rest of the face due to being in a type of cave.
Mutation in plants could lead to the plant taking over other plants area and in the process kill the other plants and unbalance nature. it could also creat superviruses that we won't be able to cure
He kept lying about Mrs.Dodds and when he did he hesitated.
I think a would be the best answer for the preposition