posted by Dulce .
Which of the following is the purpose of the waxy substance that builds up in the ear canal?
A. Insulating the ear canal
B. Trapping and removing debris
C. Promoting sound conduction
D. Cushioning and stabilizing the pinna
I thinks it is B
Ear wax is 20 to 50 percent fat, and it coats the ear canal to moisturize it, fight off infection, and help keep dust, dirt, and other debris from getting deep inside your ear.
B is the best answer above, but it is really not a good answer, as it misses the point.