When you are exposed to sun light for a long time your skin which otherwise appears normal gets heavily tanned what could be the reason?

Respuesta :

"The genes for melanin pigmentation remain turned on and prepare more melanin than usual to protect the skin from photo-damage when it is exposed to sunlight for long time" is the actual reason. 

Answer:

The answer is 'A' or "The genes for melanin pigmentation remain turned on and prepare more melanin than usual to protect the skin from photo-damage when it is exposed to sunlight for long time"

Explanation: i just did the test