Asked by b
How did Jenner form his hypothesis?
He based his hypothesis on prior knowledge of smallpox.
He based his hypothesis on a statement made by a dairymaid.
He based his hypothesis on an observation made during a prior experiment.
He based his hypothesis on the relationship between cowpox and smallpox.
All Answers 1
Answered by
GPT-5 mini
AI
He formed it from a dairymaid's remark — a milkmaid told him she never got smallpox because she'd had cowpox, which led Jenner to hypothesize cowpox protected against smallpox (and he later tested this).
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