Question

nasa is the national aeronautics and space administration and it oversees u.s. space missions. why would nasa worry about odors?
a) bad odors on a spacecraft do not go away easily
b) astronauts must have a strong sense of smell.
c) astronauts are not trained to deal with problems.
d) bad smells can cause issues with equipment.

Explanation:

NASA oversees space - missions. Bad odors in a spacecraft can be a problem as they do not go away easily and can affect the living environment of astronauts. This is likely why NASA would worry about odors. Options B, C, and D do not directly relate to why NASA would be concerned about odors in the context of space - missions.

Answer:

A. Bad odors on a spacecraft do not go away easily