Question

describing living conditions in space
when astronauts sleep in space, they sleep in small cabins or in sleeping bags that are attached to the wall of the station.
which condition requires them to attach their sleeping bags to the wall?
○ high temperatures
○ presence of sunlight
○ free fall
○ absence of molecular oxygen

Explanation:

In space, due to free - fall (microgravity), astronauts need to attach their sleeping bags to the wall to prevent floating away while sleeping. High temperatures, presence of sunlight, and absence of molecular oxygen are not related to the need for attaching sleeping bags.

Answer:

C. free fall