Answer:
I believe it would be the first option
Explanation:
The exact definition from google dictionary would be: The construction of blood vessels, which increases blood pressure.
So if you think of it, if you were to increase your blood pressure then wouldn't the blood draw closer to the skins surface?
For example, when your exercising, your blood pressure sky rockets because of all the movement being done and that's why in some people with more visible skin, their cheeks show red. When the skin is red from obvious reasons other than a skin rash after a work out, it's because the blood is so close to the skins surface.
Answer:
No.
Explanation:
There is no evidence to show that using hand sanitizer weakens your immune system.
I think the answer is a and b
