Which of the following protects healthy cells from damage during the normal aging process?

to keep them from dameging the normal aging process take videmin c  

Explanation:

this is really easy just look up what these words mean

during longer space exploration trips, crewmembers may develop vision impairment risks and short-term cardiac atrophy or a decrease in the size, strength, weight, and activity of the heart during space flight because they can experience microgravity. in addition, the long-term medical condition is loss of bone mineral density and radiation exposure.