to search for life on planets other than Earth to land on a planet in another solar system to determine the composition the Sun to send a human to land on the Moon
I gave my students this multiple choice question: The National Aeronautics and Space Administration (NASA) is the agency responsible for the space program in the United States. What was the goal of NASA's Apollo program?

Only one answer is correct among these 4 choices:
- to search for life on planets other than Earth
- to land on a planet in another solar system
- to determine the composition the Sun
- to send a human to land on the Moon

Could you tell me which one is correct?

to send a human to land on the Moon