Which of the Following Predictions Is the Most Accurate About

question 39

Multiple Choice

Which of the following predictions is the most accurate about a person who has normal external barriers and specific internal defenses but lacks nonspecific internal defenses?

• A) He wonʹt get sick because the external barriers will keep out pathogens.
• B) Invading microbes will be able to enter through the respiratory tract.
• C) He wonʹt get sick because the specific defenses will kill invading pathogens.
• D) He will have many more infections than normal.

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Definitions:

Free-Rider Problem

A situation in a shared-resource system where individuals consume more than their fair share or pay less than their fair share of the cost.

Free-Rider Problem

A situation where individuals consume a public good without contributing to its cost, undermining the provision of that good.

Public Goods

are commodities or services that are provided without profit to all members of a society, either by the government or a private individual or organization.

Rival

In economics, a good or service that cannot be enjoyed by more than one person or group at the same time without diminishing its availability to others.