The correct option is
B Fungus
Ringworm is a very infectious and common skin infection causing a ring shaped red rash. Ringworm is not caused by worms. The skin infection, also known as tinea, is caused by fungi called dermatophytes. Once the fungus is established, it spreads out in rings. The centre of the ring may clear up, while a new ring of infection develops at the edge of the old ring.
Children are most likely to get ringworm. Ringworm of the scalp can spread from child to child when children share hats, combs, or brushes. Ringworm of the body can be spread on towels, clothing, or sports equipment. Personal hygiene is important in preventing the spread of ringworm. Dogs and cats can also be infected with ringworm, and they can pass it to people through direct contact.Therefore, the correct answer is option B.