Answer:
B. Bacteria
Step-by-step explanation:
viruses in most cases are not good for the human body since they mutate so much. while most germaphobes hate bacteria it is really useful and needed in the body. for example the amount of bacteria in our body that keeps us alive. but of course there are bad types of bacteria. like E coli. which is found in under cook and contaminated food.
fungi
creates lung disease,,, etc
hope it helps :))
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