Public Schools Require Proof That a Child Has Been Immunized

question 43

Multiple Choice

Public schools require proof that a child has been immunized against several diseases before enrolling.Why?

• A)It serves as an entry barrier and so screens out children who are harder to educate.
• B)It is a costly to fake signal that a child is healthy.
• C)Since most children attend school,it is an efficient way to publicize the need for immunizations.
• D)Failure to be immunized imposes external costs on other children and teachers.

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