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)
False economics is the social science that seeks to describe the factors which determine the production, distribution and consumption of goods and services.
