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Technology is described as a positive externality but explicitly not:
AA public benefit
BThe only example
CA real example
DAn economic idea
Answer & Solution
Correct answer: B. The only example
1. The text is careful not to reduce positive externalities to one case.
2. Technology may be the most prominent example of a positive externality.
3. It is stated that it is not the only one.
4. Education and vaccination are further cases of the same pattern.
_Source: OpenStax Principles of Microeconomics for AP(R) Courses 2e (CC BY 4.0), Ch 13 'Positive Externalities and Public Goods', sections 13.1-13.4_
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