Which of the following symptoms is likely to afflict an astronaut in space (a) swollen feet, (B) swollen face, (c) headache, (d) orientational problem. 

Explanation

`implies` An astronaut likely afflict b, c, d symptoms.
(b) Astronaut may develop swollen face.
(c) Astronaut may get headache.
(d) Orientational problem will affect the astronaut in space. )