Because thy feel the need to share their beliefs and how strongly they believe them. That’s why churchgoers are known for being so judgmental. For example if they say if you’re gay you’re going to hell.
The correct answer is " Citizens would be able to form governments that ensure their interests."
The idea of a social contract involves citizens of a country giving up some of their individual liberties (aka freedoms) so that the government can make society safer. Hobbes argued that this social contract, despite the fact that it limits individual freedoms, will benefit citizens because they have the opportunity to pick their leaders who will make laws based around their wants/needs.
The main concern was taxation without representation, and individual rights.