Question

the image shows flat sedimentary rock layers in the foreground and angled sedimentary rock layers in the background. according to the principle of original horizontality, what most likely happened to the rock layers in the background? they cracked at an angle. they were deposited at an angle. they were deposited vertically and then shifted by a geologic event. they were deposited horizontally and then shifted by a geologic event.

Explanation:

The principle of original horizontality states that sedimentary rocks are initially deposited horizontally. The angled rock - layers in the background were likely originally horizontal and then shifted by a geologic event like folding or faulting.

Answer:

They were deposited horizontally and then shifted by a geologic event.