When is it NOT necessary for a person to wear sunscreen during a recreational activi 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 indoors.<br /><br />Sunscreen is important to protect the skin from harmful ultraviolet (UV) rays from the sun. However, when an activity is conducted indoors, there is no direct exposure to the sun's UV rays, so it is not necessary to wear sunscreen.