What is the name of the spring-breeding frog with a high-pitched 'peep' call?

The spring-breeding frog with a high-pitched “peep” call is the spring peeper.

The spring peeper, Pseudacris crucifer, is a small chorus frog native to the eastern United States and Canada. Its name comes from the sharp, repeated advertisement call produced by males during the breeding season. The call often signals the arrival of spring and can be heard around ponds, marshes, swamps, and wet woodland edges, even when the frogs themselves are hidden in vegetation.

Spring peepers are usually tan, brown, gray, or olive, and many have a dark X-shaped marking on the back. The species name crucifer means “cross-bearing,” referring to this marking. Unlike the answer choices, the spring peeper is not simply a generic tree frog or chorus frog, although it belongs to the broader chorus-frog group.

A remarkable neighboring fact is that northern spring peepers can survive partial freezing. Their bodies distribute glucose as a natural cryoprotectant, helping protect cells during winter dormancy. Males may call thousands of times in one night to attract mates.