An antibiotic is a type of medicine that is used to treat certain diseases that are caused by bacteria. Doctor Inge uses Antibiotic A to treat athlete's foot, a condition caused by a fungus. Three days later, the patient comes back and reports no change in their condition. What can we conclude about fungi? Why doesn't the antibiotic work on the fungus that causes athlete's foo

The fungus is resistant to the antibiotic

The antibiotics did not work because antibiotics do not kill fungal infections.

Explanation:

According to this question, an antibiotic is a substance/medicine that combats bacterial-caused infections or diseases. In this case, an antibiotic A was used against a fungus that caused athlete's foot, however, there was no effective result recorded.

The fungi in this case can be said to be "RESISTANT" to the antibiotic used because antibiotics are specific to bacterial infections not fungal infections. Antibiotics only kill bacteria not fungi, hence, the antibiotic A used will have no effect whatsoever on the fungus causing the athlete's foot infection.