Quiz 8 Question 19 of 20

A helper sets a 16-ft fiberglass extension ladder on compacted gravel to reach a 14-ft garage roof. The base sits 4 ft from the wall for a proper climbing angle, but the rails extend only about 1 ft above the roof edge. Which ladder setup makes stepping from the ladder onto the roof safe for the helper?

Select an answer to reveal the explanation.

Motivation