Answer:
B) Bacteria
D) Viruses
Step-by-step explanation:
There are 5 major groups of microbes: Archaea, Bacteria, Fungi, Protists, and Viruses. Thus, we can conclude that answers B and D are correct.
Antibiotics are a type of medicine that fight bacteria/bacterial infections.
Vaccines help boost the number of antibodies in our immune system to provide immunity against disease(s).