Final Answer:
No, it is not contagious and caused by a fungus. Option C.
Step-by-step explanation:
Athlete's foot is not caused by bacteria or a virus; instead, it is a fungal infection. This condition is primarily caused by a group of fungi called dermatophytes, commonly found in warm and moist environments. While athlete's foot is bothersome, it is not contagious in the traditional sense, meaning it does not spread through casual contact. It is typically contracted in places like locker rooms or communal showers where the fungus thrives. The causative fungi, such as Trichophyton, thrive in warm and damp conditions, making these areas ideal for transmission.
The fungus responsible for athlete's foot infects the top layer of the skin and thrives in the keratin, a protein found in the skin, hair, and nails. Unlike bacterial or viral infections, athlete's foot doesn't spread through the air or by touching an infected person. It spreads by direct contact with contaminated surfaces or by coming into contact with the fungi through shared items like towels or shoes. However, maintaining good personal hygiene, such as keeping feet clean and dry, can help prevent the spread of the infection.
In conclusion, athlete's foot is not contagious in the same way as bacterial or viral infections. It is a fungal infection caused by dermatophytes and is typically contracted in specific environments conducive to fungal growth.