Ohio State Board Nail Technician Practice Exam

Onychophagy is the chronic habit of biting nails, particularly the nails of the fingers. This answer is correct as it directly defines Onychophagy.

Overgrown cuticles, nail fungus, and brittle nails are incorrect options because they do not accurately define Onychophagy. Overgrown cuticles refer to the skin around the nail, nail fungus is a common fungal infection of the nail, and brittle nails describe nails that break easily. These options do not specifically refer to the habit of biting nails, which is the defining characteristic of Onychophagy.