Which right is specifically granted to United States citizens?

The right specifically granted to United States citizens is the right to vote. This right is foundational to the democratic process and is explicitly protected by the Constitution and various amendments. For instance, the 15th Amendment prohibits the government from denying a citizen the right to vote based on race, while the 19th Amendment ensures that women have the right to vote.

Voting is a cornerstone of citizenship as it empowers individuals to participate in the political process, influence government decisions, and select their representatives. While the other options listed—such as the right to bear arms, the right to free speech, and the right to a fair trial—are important rights, they are not specifically limited to citizens. These rights also apply to non-citizens in various contexts, especially in regards to civil liberties guaranteed by the Constitution. Thus, the right to vote is uniquely tied to citizenship status, making it the correct answer in this scenario.