25. Fossil fuels are carbon-containing deposits that form deep beneath
Earth's surface. Diana wants to show carbon moving to a location to form
fossil fuels. Which model most accurately shows this process?

A. She bubbles gas through a water sample.
B. She blows bubbles into the air and watches them spread.
C. She sprinkles breadcrumbs onto water and watches them sink.
D. She makes a replica of a volcano and shows magma erupting from it.