Ringworm is a fungal infection, so option 1 - Fungi - is the correct answer. Ringworm, also known as dermatophytosis, is a common skin infection caused by various species of fungi. These fungi thrive on dead tissues, such as skin, hair, and nails. Contrary to its name, ringworm is not caused by worms but is characterized by a ring-shaped rash on the skin. The fungi responsible for ringworm can be found in soil, animals, and humans. It is highly contagious and can spread through direct contact with an infected individual, animals, or contaminated objects like combs, towels, and clothing. Ringworm can affect different parts of the body, including the scalp, body, feet (athlete`s foot), and groin (jock itch). Treatment for ringworm typically involves antifungal medications, both topical and oral, depending on the severity and location of the infection.