Can you please tell me if these are correct?

Question

question: Describe which simple machine can be used to make work easier by:
a. changing the direction the force is applied = pulley or gear (please tell me which is correct)
b. increasing the amount of force applied to the machine = wedge
c. increasing the distance over which the effort force is applied=inclined plane

Answer 1

(a) is pulley, but i think (b) is gear. think about a 10 speed bike. you put little effort into peddling, but as the work is applied over the chain and transmission, the gears put more work into it. maybe?