oDescribe how the location of the center of gravity of passengers plays a role in their position in space, and how it will help them move around in the microgravity conditions of the space shuttle when they are on board.

It might. it might because if you think about if they discovered if we came from (lets say something funny like aliens) and thy found cells that matched and they would have t do more research about it but would most probably change their theory.

Ithink the answer is b
not sure

Yes yes yes very good