Answer:
B. Stress caused by forces that stretch an area of the crust made the rock to break
Step-by-step explanation:
From the picture inserted to this problem, we see a unit that has been severely fractured.
Fracturing results from the brittle deformation of a rock under applied stress.
- Rock fracturing results in the formation of joints and faults.
- We can obviously see different sets of joint sets on the body of the rock in the picture attacked.
- Also, a prominent fault which resembles an extensional fault can also be seen.
- Therefore, the stress caused the stretch of the area which in turn makes the rock the rock to break.