As the geology officer on an expedition to a newly discovered, Earthlike planet, you must determine where to locate the first permanent settlement. This planet has volcanoes and appears to have a crust composed of moving plates.

In order to avoid an earthquake zone, you consider avoiding a location with:

a. a young mountain range along a continental coast.

b. broad river deltas associated with large, low coastal plains.

c. an old mountain range with no volcanoes.

d. cliffs made of limestone.