Which of these is a human disease caused by fungus anthrax leprosy chickenpox ringworm?

The correct answer is ringworm.

Ringworm is a common fungal infection of the skin that can affect both humans and animals. It is caused by a type of fungus called dermatophyte, which thrives on keratin, a protein found in the skin, hair, and nails. Ringworm can appear on any part of the body and is characterized by red, itchy, scaly patches of skin that may be raised or have a ring-shaped appearance.

While anthrax, leprosy, and chickenpox are all diseases caused by bacteria or viruses, ringworm is specifically caused by a fungus.