Don’t put a random answer istg- chile anywayss Which statement explains one reason why unconformities occur?

Rocks along a fault break and move.
Igneous rock forms at Earth’s surface.
No sediment is deposited over a long time.
Igneous rock forms between sedimentary layers.

first let's look at what "unconformity" means "An unconformity is a buried erosional or non-depositional surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous." -google.

So that would make the answer D, "Igneous rock forms between sedimentary layers."

(also, the fact you said "chile" compelled me to look it up and help you're hilarious)

the soviet union wanted to impose communist governments in eastern europe.