Which is one part of the immune system that protect the body from diseases? a)mucus
b)skeleton
c)esophagus
d)fingernails

Mucus

Explanation:

Mucus works as a selective barrier to sensitive organs in the body.

Harmful microbes that could pass by the nose into the lungs and cause infections are taped earlier and excreted by mucus.

Mucus traps invading pathogens preventing them from reaching sensitive parts of the body thereby preventing diseases.

answer: b. reduces acid production to slow digestion

tell their parents and make sure she gets from a counselor or therapist. be supportive and be there for her. be a kind and good friend. spend time with her to make her feel like she's not alone. i'm not a professional but i really hope they stays strong.