Identify the structure of Congress.

Congress is at-large.
Congress doesn’t have a structure.
Congress is bicameral.
Congress is unicameral.

Congress is bicameral.

The correct answer is:

- Congress is bicameral.

Congress is structured in a bicameral system, meaning it consists of two separate legislative bodies: the House of Representatives and the Senate. This structure was established by the United States Constitution and ensures a system of checks and balances within the legislative branch of the U.S. government.