What are diseases such as a strep throat and Athlete’s foot caused by?
miasma
decaying matter
microorganisms
temperature changes

c. Microorganisms

Explanation:

Microorganism are the microscopic organisms present in environment such as bacteria, fungi and virus.

Strep throat is a infection of throat caused by a "Group A Streptococcus bacterium". The diseases of strep throat causes large red patches on the skin. some of the symptoms of strep throat include fevers, chills and blisters.

Athlete's foot is a feet infection caused by different fungi such as trichophyton, microsporum and epidermophyton. Symptoms of Athlete's foot include scaling, itching, redness and cracking.

Hence, the correct option is c.

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