The following table shows the symptoms in four patients. Each patient suffers from a different disease.

Patient Disease Cause Symptom
A Tuberculosis Bacteria Difficulty breathing, coughing
B Polio Virus Paralysis
C Food poisoning Bacteria Vomiting, diarrhea
D Huntington's disease Hereditary Physical movement beyond patient's control

Which patient's musculoskeletal system is affected by an infectious agent?
A
B
C
D

What is the best way to use the clean water act to address the issue of dirty water and diseases that plague asmall community? a) to report the number of cases of people who havecholera symptomsb) to provide health guidelines about effects from waterborne diseases c) to enforce standards that focus on chemical dischargeinto bodies of waterd) to carry out research that investigates how dirty wateraffects human health