At what age are citizens allowed to vote for President?

Citizens are allowed to vote for President at eighteen years old, which aligns with the provisions outlined in the 26th Amendment to the United States Constitution. This amendment was ratified in 1971 and specifically mandates that the right to vote cannot be denied to citizens who are eighteen years of age or older based on age.

The age of eighteen was chosen to reflect a societal consensus that individuals at this age are mature enough to participate in the democratic process, often being legally recognized as adults capable of making significant decisions, such as joining the military or entering into contracts. Other options, such as sixteen, twenty-one, or twenty-five years old, do not reflect the legal voting age established by federal law, making eighteen the only correct answer in this context.