An effective way to ensure the exclusion of children who are ill is to institute a policy for ?

a- daily health checks.
b- mandatory immunizations.
c- frequent hand washing.
d-standard precautions.

The nature–nurture issue refers to the debate over the relative contributions that make to the development of psychological traits. a.introspection and nerve cell activity b.unconscious and conscious motives c.behavior and mental processes d.genes and experience