Choose the five stages of the american space program. mercury skylab gemini salyut sputnik space shuttle apollo emdeavor mir discovery

1) Mercury; 2) Skylab; 3) Gemini; 4) Space Shuttle; 5) Apollo . The United States Agency that deals with space exploration and its programs is th NASA or National Aeronautics and Space Administration, with many successful missions, including puting the first man on the Moon (program Apollo).

a and c?

i think it is a and c

answer: because they get bored or smth idk