Answer: B. separates powers, keeping one body from gaining too much power.
Any country or state with a legislature divided into two separate chambers, assemblies, or houses practices bicameralism. The entire concept of a mixed government is centered on bicameralism and unlike unicameralism; bicameralism prevents a legislative branch from possessing too much power. With this, bicameralism balances and bridges the power gap existing between different groups in a society.
In the US for example, the parliament is divided between the senate and the House of Representatives. In Britain however, the parliamentary system is divided into the House of Commons and the House of Lords. Summarily, in bicameral legislation, all authority is not given to a chief executive, and parliaments are prevented from gaining too much power.