Which of the Following Findings Was Essential for Edward Jenner's

question 10

Multiple Choice

Which of the following findings was essential for Edward Jenner's vaccination process?

• A) A weakened microorganism will not cause disease.
• B) Pathogenic microorganisms infect all humans and animals in the same manner.
• C) Someone who recovers from a disease will not acquire that disease again.
• D) Exposure to a milder disease form may produce immunity.
• E) Disease is caused by viruses.

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Definitions:

Preoperational Stage

A stage in Jean Piaget's developmental theory of childhood, from about ages 2 to 7, where children begin to engage in symbolic play but lack the ability to perform operations or think logically.

Represent Another

A phrase that suggests acting on behalf of or symbolizing someone or something else.

Reversibility

The cognitive ability to recognize that numbers or objects can be changed and then returned back to their original condition.

Nonstage Theory

A theory suggesting that development or cognition does not progress through fixed stages, but rather continuously.