Enzymes Speed Up Reactions by Lowering the Activation Energy of a Reaction.This

Multiple Choice

Enzymes speed up reactions by lowering the activation energy of a reaction.This is analogous with

A) reducing the force a ball needs to start rolling down a hill.
B) increasing the height an apple will fall from a tree.
C) blocking a flowing river with a dam to stop the flow.
D) causing a snow storm in the middle of summer when temperatures are hot.
E) All answers are correct.