The space shuttle a) can only be used once
b) can be used many times to carry astronauts into orbit
c)is an uncrewed space probe
d)carried astronauts to the moon

B

Explanation:

The Space Shuttle was a partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program.Its official program name was Space Transportation System (STS), taken from a 1969 plan for a system of reusable spacecraft where it was the only item funded for development.

a. people generally need the same amount of physical activity to maintain weight stability.