Answer:
D) All Of The Above
Explanation:
Different hosts have bacteria with different levels of resistance to antibiotics because bacteria, much like humans, have unique genetic makeups. This genetic diversity among bacteria means that some may naturally possess resistance to certain antibiotics, while others may be more susceptible. Additionally, the immune systems of hosts play a role, as individuals may have varying abilities to combat bacterial infections. Environmental factors, such as previous exposure to antibiotics, can also influence the development of resistance in bacteria.
