When is it not necessary for a person to wear sunscreen during a recreational activity? a. when it's cold outside b. when it's not a sunny day c. when the activity is shaded by trees d. when the activity is indoors

The correct answer is D. when the activity is indoor

Explanation:

Sunscreen plays an important role in protecting the skin from sunburn and the ultraviolet rays coming from the sun. These ultraviolet rays can also harm you when it is not a sunny day or in winters or when you are playing under shaded trees.

Ultraviolet rays can not penetrate the building walls so when anyone is playing indoor then wear sunscreen during recreational activity is not necessary but any activity outside during day time requires sunscreen to protect the skin from harmful rays of sun. Therefore the correct answer is D.

answer; i believe its the red blood cells; plz check first good luck

the maintenance of fluid balance during exercise. author information: fluid supplementation is necessary for exercise in which fluid losses must be offset by intake to avoid the negative effects of hypohydration on health and performance.