What is the most important advice a nurse should give to parents to prevent the spread of conjunctivitis in their child?

Rationale: A. Sharing towels and washcloths increases the risk of spreading conjunctivitis and should be avoided. B. Frequent handwashing and avoiding eye-touching are key practices in preventing the transmission of conjunctivitis, especially viral or bacterial types. C. Keeping the child indoors is not necessary for all cases and does not address the primary method of transmission. D. Using unprescribed antibiotics can be dangerous and may lead to resistance or inappropriate treatment.