B. Many parliamentary government are multi-party.
This is the best summary based on key words for the paragraph. In this paragraph, the author talks about multi-party systems. The main idea he conveys is that many parliamentary governments are multi-party. Moreover, he later proceeds to talk about the characteristics and relative pros and cons of multi-party systems.
c and b
Poop man kinda stupid
C.Multiparty parliamentary governments are less stable.