How is parliamentary democracy different from presidential democracy?

First, a parliamentary democracy is less likely to encounter gridlock than a presidential democracy is. In a parliamentary system, there cannot be a situation in which the chief executive is from one party while the legislature is (in whole or in part) controlled by a different party. This makes the parliamentary system more efficient.

Explanation:

john locke studied medicine and he laid a lot of groundwork for the enlightenment he also contibutied to the development of liberalism

its c not d   tell me if that´s correct