9.

Question

The youngest rocks are found near the center of _____.

a downwarping, known as a basin

fold-and-thrust mountain belts

an upwarping, known as a dome

uplifted structures called horsts

Answer 1

The youngest rocks are found near the center of a downwarping, known as a basin.

In geological terms, basins are areas where sediments accumulate, and the center of a basin tends to have the youngest rock layers due to continual deposition over time.