Question

Which occurs at a transform boundary?

A.
One plate collides with another head-on.

B.
Two plates spread apart.

C.
One plate sinks beneath another.

D.
One plate slides past another.

Answer 1

well kinda all of them
first they smash into each other (hence spreading away from ones at the back)
then one goes under and one goes over (creating a mountain)
but this process takes forever and ever

Answer 2

think of mountains in nepal each year they rise / sink a tiny bit