At what average rate does a fingernail grow per week?

Fingernails typically grow at an average rate of approximately 1 millimeter per week. This growth rate can vary based on several factors including age, health, season, and indeed genetics. Considering this, the correct choice reflects a misunderstanding of the average nail growth, as fingernails do not typically reach a growth rate of 3 millimeters per week in healthy individuals.

Understanding the average rate of growth is crucial for nail care professionals as it helps them predict how often clients may need services such as manicures and pedicures. Regular monitoring and maintenance can also help in identifying potential health issues that may affect nail growth patterns.