Which is the best description of health protection

Which one of the following causes people to go through a cycle of losing weight, gaining it back, then lose it again

Explain why many people are concerned about uv rays? explain what causes the skin to burn in the sun? explain why people should avoid the sun if taking a photosensitive medication?

Suki and lily decide to go to a party. lily drives them there and then drinks a lot of liquor in a short amount of time. lily then says tired and tells suki to get in the car because they're leaving. suki tells lily in a hesitant, low voice that she doesn't think lily is safe to drive.