On the basis of your understanding of the chain of infection, what would be the most effective method of controlling the spread of conjunctivitis in a daycare center?

a) Conjunctivitis is not contagious.
b) Close the daycare center until all children are symptom-free.
c) Sanitize hands thoroughly after each contact with a symptomatic child.
d) Immediately send the child home to prevent the spread of the disease.