Answer: c. Because the less you and your bike weigh, the easier to speed up
Explanation:
A 10 wheeler truck is quite heavy which means that a significantly larger amount of energy is needed to move one than a bicycle. This implies that the lighter an object is, the easier it is to move.
This is why it is easier to ride on a lightweight bicycle than a 10 wheeler because with both the rider and the bicycle being of lower weight, the easier it is to move the bicycle and speed it up.