Question

What is a immune system?

A. Common viral infection of the upper respiratory tract

B. Body system that attacks pathogens in Oder to prevent disease

C. Can you dangerous microorganism that causes disease

D. No answer text provided

Answer 1

B

Step-by-step explanation:

Answer 2

B

Step-by-step explanation:

The immune system is a system that helps protect the body from viruses and illnesses.