Question

which sentence states a fact? it can cost over two hundred thousand dollars per hour to fly air force one, the official airplane of the president of the united states. the sitting u.s. presidents airplane, air force one, is the most important symbol of the american government.

Explanation:

A fact is a statement that can be proven true or false with evidence. The first sentence provides a quantifiable cost (over two hundred thousand dollars per hour to fly Air Force One) which can be verified. The second sentence uses subjective language ("most important symbol") which is an opinion, not a fact.

Answer:

It can cost over two hundred thousand dollars per hour to fly Air Force One, the official airplane of the President of the United States.