The correct answer to this open question is the following.
The writers of the Constitution mainly based the plan for the legislative branch on the bicameral English Parliament.
The framers of the United States Constitution received many influences when writing the document. They created the Legislative branch inspired by the bicameral Parliament of Britain.
The US Legislative branch is comprised of the lower chamber, the House of Representatives, and the upper chamber, the Senate. The legislative main function is to create and pass laws that benefit and protects US citizens.