The astronaut in space will suffer from (b) swollen face, © headache and (d) orientation problem.
(a) We know that legs carry the weight of the body in the normal position due to gravity pull. The astronaut in space is in weightlessness state. Hence, swollen feet may not effect his working.
(b) Due to weightlessness the astronaut may develop swollen face. As eyes, ears, nose are all embeded in face.
© Headache is due to mental strain. It will persist whether a person is an astronaut in space or earth.
(d) Space also has orientation, we also have the frames