Question

The purpose of the ______ system is to prevent foreign substances from entering the body and to attack foreign substances that are in the body.

A. immune
B. endocrine
C. nervous
D. excretory

Answer 1

A. Immune because this is what the immune systems job is

Answer 2

Immune

Step-by-step explanation: The immune system is the body's defense against infectious organisms and other invaders. Through a series of steps called the immune response, the immune system attacks organisms and substances that invade body systems and cause disease. The immune system is made up of a network of cells, tissues, and organs that work together to protect the body.