Read the sentence from The Ancient City.

Terracotta dolls of course are more likely to survive than those made of wood or cloth, and no doubt these also were common.

In the sentence, the author contrasts terracotta (clay), wood, and cloth dolls. What central idea does this sentence connect to?

Children in ancient Greece played with toys.
Ancient Greeks valued wood more than cloth.
Many Greek stories were painted on terracotta vases.
More dolls were made from clay than from wood or cloth.