Answer:
The correct option is B. The claim is invalid because there are many types of bacteria that help organisms maintain homeostasis.
Step-by-step explanation:
Bacteria are often considered to be disease or infection-causing organisms but this is not true. Not all bacteria are harmful, many other bacteria's play essential roles in the maintenance of life on the Earth. The human body is made of many bacteria which help in maintaining the homeostasis of the body. The human body is surrounded by enormous bacteria that are good and they are termed as human's natural microbiota.