to simulate the air pressure of Earth to help astronauts float in outer space to protect astronauts from solar radiation to provide an oxygen supply for breathing
I gave my students this multiple choice question: Why is a spacesuit inflated like a balloon?

Only one answer is correct among these 4 choices:
- to simulate the air pressure of Earth
- to help astronauts float in outer space
- to protect astronauts from solar radiation
- to provide an oxygen supply for breathing

Could you tell me which one is correct?

to simulate the air pressure of Earth