Which statement BEST describes a difference between a presidential system of democracy and a parliamentary system of democracy?

The major difference between these two systems is that in a Presidential system, the executive leader, the President, is directly voted upon by the people (Or via a body elected specifically for the purpose of electing the president, and no other purpose), and the executive leader of the Parliamentary system.

C

Explanation:

The prime minister acts as head of the national government in a parliamentary state ONLY.