Why does the author of "Edward Jenner and the History of Smallpox and Vaccination" most likely include dates when discussing Jenner's work to replace variolation?
O to show that time was important to Jenner in relation to his work
O to show the many years it took for the vaccination to replace variolation
O to show why Jenner was ridiculed for his work on the vaccination program
o to show how the British Parliament slowly came to accept the value of the vaccination