Answer:
B. negotiating and exercising flexibility
Explanation:
I'm not 100% sure about this one but I think that is the answer.
While some contact lenses provide UV protection, they don't cover your whole eye, so you still need sunglasses. Look for sunglasses that protect you from 99 to 100 percent of both UVA and UVB light. This includes those labeled as "UV 400," which blocks all light rays with wavelengths up to 400 nanometers.
Systemic.....................................................................
I think it’d be both because it can be physical ex: bodybuilding
And can be mental as well since we can strengthen our brain
hope this helped
