Sometimes our immune system can be
triggered by things inside our bodies, like
cells that don't follow the rules, and this can
cause
a. cancer
b. pathogens
c. macrophages

Explanation:

Cancer occurs when a few invalid cells somehow don't get destroyed, as they should. They continue to replicate, but cannot do the job that they were supposed to do. Cancer is actually not deadly because the cells actively do bad things, it is just that they crowd out normal cells, and if the body function is vital, that is very bad.

PLEASE MARK BRAINLIEST

i think itś the 2nd one because its not anything major like having sex. its putting limits to your self if that makes sense.

hope that and feel free to ask me more questions : )

brainliest? ?