Question

question 2 of 5 this excavation is at risk for a cave - in because the walls of the excavation are unstable. what type of excavation protection will address this situation? fall prevention oxygen deficiency and toxic fumes shoring

Explanation:

Shoring is used to support unstable excavation walls to prevent cave - ins. Fall prevention deals with workers falling and oxygen deficiency/toxic fumes are about air quality, not wall stability.

Answer:

C. Shoring