One of the major contributors to our understanding of vaccination was edward jenner. what is jenner’s contribution to the development of vaccinations? choose the statement that best describes the work of edward jenner.

One of the major contributors to our understanding of vaccination was Edward Jenner. What is Jenner's contribution to the development of vaccinations? Choose the statement that best describes the work of Edward Jenner.

a) He discovered the process of passive immunization--the transfer of protective antibodies to an individual.

b) He was the first person to demonstrate that it was possible to make a vaccine against a bacterial infection.

c) Jenner developed the process of variolation, whereby he infected people with ground smallpox scabs to protect them from smallpox.

d) He demonstrated that inoculating people with crusts from cowpox lesions protected them from smallpox infection

He demonstrated that inoculating people with crusts from cowpox lesions protected them from smallpox infection is the statement which best describes about the work of Edward Jenner.

Option d

Edward Jenner was the inventor of Smallpox Vaccination. Edward Jenner was born in Berkley, England on 17 May 1749. He was the person who first used the word vaccine or Vaccination. In 1798 he invented Variolae Vaccine also known as the "Cow Pox vaccine".

The vaccine has defending nature against smallpox. He designed the vaccine to defeat the disease of smallpox which was very common in milkmaids. His Variolous Material was very successful in defeating the infection. That's how Jenner contributed to the rise and beginning of Vaccination and end of several infectious diseases.  

equal distribution i think.

so whats the answer