NEED HELP ASAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Select the choice that best completes the following sentence.

Simple machines
A.
are tools that make work easier.
B.
reduce the amount of energy needed to do work.
C.
are made up of multiple moving parts.
D.
cannot be combined to make compound machines.