Edward Jenner’s smallpox inoculation experiment was based on an observation by a dairymaid that she could not get smallpox because she had already had cowpox. How did Jenner form his hypothesis from this observation? He asked what would happen if he deliberately inoculated someone with cowpox fluid from another person.
He tested different existing inoculations to see which one was most effective in preventing smallpox.
He observed dairymaids milking cows with cowpox to see if the statement was true before forming a hypothesis.
He drew a conclusion about cowpox infection based on the comment he overheard from the dairymaid.

Edward Jenner's smallpox inoculation experiment was based on an observation by a dairymaid that she could not get smallpox because she had already had cowpox.

Explanation:

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Change the stimulus to read: Edward Jenner? ’s smallpox inoculation experiment was based on his observation that dairymaids who had had cowpox did not contract smallpox. How did Jenner form his hypothesis from this observation? A

A.He asked what would happen if he inoculated a person with cowpox fluid and then later with smallpox fluid.

B.He tested different existing inoculations to see which one was most effective in preventing smallpox.

C.He observed dairymaids who had contracted cowpox to see whether they became immune to smallpox.

D. He drew a conclusion about dairymaids who got cowpox becoming immune to getting smallpox.

Explanation:

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.