human
Question: A student sets a block at the top of a wooden ramp. The student pushes the block. As the block slides down the ramp, it slows down and then comes to a stop. What force causes the block to slow down?

Choices:
A) the force of gravity
B) the force of friction
C) the force of magnetism
D) the force of the student's push
gpt
The correct answer is 1: the force of friction.