Answer: option b.
Explanation:
Based on the information given, you know that:
- The ground is at 0 feet.
- The initial posititions of both elevators were at 0 feet (because both moved from the ground level).
Therefore:
- If the final position of Elevator 1 is at +17 feet (positive) means that it moved 17 feet above the ground level.
- If the final position of Elevator 2 is at -22 feet (observe the negative sign) means that it moved 22 feet below the ground level.