Question

in which situation is the principle of cross - cutting relationships useful in determining relative age? a fault breaks through sedimentary layers. fossils of two different species are found in different rock layers. sedimentary layers form over millions of years in a lake bottom. lava flows form on top of one another from several eruptions over time.

Explanation:

The principle of cross - cutting relationships states that a geologic feature which cuts across another is younger than the feature it cuts through. A fault cutting through sedimentary layers is an example where the fault is the cross - cutting feature and the sedimentary layers are the features being cut, useful for relative age determination.

Answer:

A. A fault breaks through sedimentary layers.