The 3rd one, the one that begins with knowledge
I believe the answer is B
Hangovers are the body's adverse reaction
Answer:
B. Surface of the skin
Explanation:
If we had mucous on the surface of our skin then our skin would have a thick slippery fluid like substance on it all of the time. Mucuos membranes are present in the digestive tract, mouth, lungs, and more.