What statement is supported by the evidence from the passage?
Exercise keeps astronauts’ muscles strong.
Balanced meals and vitamins help fight sickness.
Good sleeping habits improve overall health.
Astronauts’ preventive habits help them stay healthy in space.
Healthy habits are not as important to astronauts as low gravity is.
Preventive habits are optional for astronauts before they enter space.
Bad microbes will make astronauts sick no matter what they do.