Answer:
B. exercise tubing
Explanation:
It is the most portable & reliable source of a full body workout equipment.
Tom can reach his goal safely because he is prepared and committed to learning how to ride his skates. Toms being safe by signing up for a class, buying the right safety equipment, and trying to reach his goal by starting 2 months ahead of the summer.
C. Skin
Because it's the outer layer of your body that protects everything
