I would say it's option "A."
Answer:
Salmonellosis
Explanation:
All of the given symptoms match with diagnosis. Dehydration is not a symptom of the other three.
1. rock climbing
2. dog sledding
3. hiking
Answer: C. Multiple outcomes can be evaluated from a single exposure
Explanation:
Cohort studies continue with a disease-free group of people (a cohort). The cohort's people are divided by whether or not they're prone to a possible cause of illness. The entire cohort is monitored over time to see how the emergence of new cases of the disease (or other outcome) varies with and without exposure between the classes.
In a case-control analysis too, the same disease can be studied. A case-control research starts with the collection of cases including people with a disease and the tests which includes people without the disease. The controls would represent people who would have been cases of research had the disease formed (population at risk).
The advantage of Cohort studies over a case-control study involves that one can determine variety of outcomes/diseases caused by one exposure for example, lung disease, heart disease, and smoking-caused renal disease.
Hence, the correct option is C." Multiple outcomes can be evaluated from a single exposure".
