The body can be invaded by (mutagens / bryophytes / tracheophytes / pathogens), which are harmful microorganisms that cause (infectious / chronic / malignant / proactive) diseases. The body then initiates a(n) (homeostasis / feedback / inflammatory / inhibition) response, which may involve redness, swelling, and fever.

1. Pathogens

2. Infectious

3. Inflammatory

Explanation:

A pathogens is any disease-causing microorganism or agent. Pathogens such as bacteria, virus etc. invade the body of a living organisms and cause an abnormal state of health (disease) in such organism. The diseases caused by pathogens are usually infectious, meaning that it can spread from one individual to another.

This attack by pathogens triggers an inflammatory response by the body of the host. This inflammatory response is visibly characterized by redness, swelling, and fever etc.

answer: - b cells

explanation: -

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.