West Virginia Barber Written Practice Exam

Non-pathogenic bacteria are known as good bacteria because they are beneficial to the body. These bacteria help the immune system by protecting against infections and aiding in the breakdown of food. They play a crucial role in maintaining a healthy balance in the body. Pathogenic bacteria, parasites, and viruses are harmful and can cause infections and diseases, unlike non-pathogenic bacteria. So, the correct answer is non-pathogenic bacteria because they have a positive impact on the body by supporting the immune system and aiding in digestion.