Cameron is a newborn baby whose parents are thinking about vaccinating him against disease. The figure illustrates the marginal benefits and marginal costs of vaccinations for Cameron. Cameron's community derives benefits from Cameron being vaccinated, as illustrated by the positive externality curve above. Given this information, the privately optimal number of vaccinations for Cameron to get is 

a. 0. 

b. 4. 

c. 8. 

d. 10. 

e. 20.

Transcribed Image Text:

40 35 0 25 20 5 30 25 15 10 MB Positive Externality **** MC MBcial 5 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Quantity (number of vaccinations per lifetime)