B. Think about the way the two chunks are said. The second part is more of an added thought, scoffed out. Dashes are perfectly fine where they are. C is definitely incorrect because the second sentence is just a dependent clause. A just doesn't make much sense. Dashes are pauses, breaks in what a person says. They can signal emotional changes, too.
Answer:
They believed that direct democracy would make government more responsive and accountable.
Explanation:
in a direct democracy, the citizens will have an active role in voting for the type of regulations that shall be passed by the government. (this is what achieved through ballot initiatives, referendums, and recalls)
Progressive politicians believed that direct democracy will give more power to the citizens to influence the future of the country. It will make the government officials become responsive and accountable because the people will more likely to not re-elect them if they do not at according to people's will.
The answer would be the tundra because it has cool summers cold and harsh winters a dry climate and sparse vegetation.