Answer:
Perhaps general medical knowledge (in depth maybe)?
Explanation:
But really in a PowerPoint presentation you can write about anything so I suggest you think about which part of medicine you want to focus on (personal view but I hope it might help somehow).
Answer: i think it could be the habitat in which the agent normally lives, grows, and multiplies.
Explanation: Basically, the reservoir may or may not be the source from which an agent is transferred to a host.
