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:

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.