Final answer:
Joan would be best suited for a job in clinical microbiology in a hospital setting due to her interest in discovering unknown microbes and connecting microbiology to patient health. Researching new antimicrobial agents could also be a good fit.
Step-by-step explanation:
Considering Joan's passion for uncovering unknown microbial organisms and her desire to link microbiology to patient health, she would likely find a fulfilling career in clinical microbiology in a hospital setting. This area would allow her to work closely with patient care and manage the identification and treatment of infectious diseases. Moreover, her interest in discovery could be highly valuable in a clinical setting where emerging pathogens and antimicrobial resistance are growing concerns.
On the other hand, if she is also interested in research and development, especially related to new treatments, another excellent fit could be researching new antimicrobial agents. This field focuses on identifying new sources of antibiotics that could be vital for treating bacterial infections, a key aspect of patient health in relation to infectious diseases.