Question

what is the relationship between a geologic fault and the rock layers it cuts through?
the fault is older than the layers it cuts through.
the fault is younger than the layers it cuts through.
the fault and the rock layers were all formed at the same time.
the faults age cannot be determined relative to the rock layers.

Explanation:

This relies on the principle of cross-cutting relationships in geology, which states that a geologic feature (like a fault) that cuts through existing rock layers must have formed after those layers were deposited.

Answer:

The fault is younger than the layers it cuts through.