Final answer:
The skin does not regain elasticity as effectively once it has been stretched or damaged by UV radiation. This damage is often permanent, leading to issues like sagging or wrinkles. However, the skin can still retain pigmentation, moisture, and sensation. The correct option is A.
Step-by-step explanation:
The skin may have difficulty regaining its elasticity once it has been stretched or damaged by UV radiation. Over time, exposure to UV radiation can degrade the skin's elastin fibers, which are critical for allowing the skin to return to its original shape after being stretched.
Although the skin can sometimes repair some of the damage, significant or repeated exposure to UV radiation can lead to permanent loss of elasticity, sometimes leading to issues like sagging or premature wrinkling. Pigmentation changes, such as tanning or dark spots, do occur as a result of UV exposure, but this is actually a protective response of the skin increasing melanin production.
The skin can also regain moisture through hydration and skincare routines. As for sensation, if nerve endings are not severely damaged, the skin will likely maintain its ability to feel touch, pain, and temperature changes.
Therefore, the correct option is A.