Question

a. layer y is partly covered by layer x.
b. layer x crosses over layers w, z, and y.
c. layer y is larger in area than rock layer z.
d. layer z is parallel to layer x, which was deposited before layer y.

Explanation:

• Analyze each option:
• Option A: By observing the diagram, it can be seen that Layer Y is partly covered by Layer X.
• Option B: Layer X does not cross over Layer W.
• Option C: There is no clear indication in the diagram that Layer Y is larger in area than Layer Z.
• Option D: Layer Z is not parallel to Layer X, and Layer X was deposited after Layer Y.

Answer:

A. Layer Y is partly covered by Layer X.