Which One of the Following Behaviors Illustrates an Exaptation

question 17

Multiple Choice

Which one of the following behaviors illustrates an exaptation?

• A) A dog that avoids consuming bitter foods.
• B) A brief raising of the eyebrows, lasting a fraction of a second, when people approach one another during greeting.
• C) An adult human who laughs and feels happy when observing a baby who is cooing and laughing.
• D) All of the above.

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Definitions:

Demand

The willingness and ability of consumers to purchase goods or services at various price levels.

Price Elasticity

A measure of how much the quantity demanded of a good responds to a change in the price of that good, with elasticity greater than one indicating a responsive market.

Inelastic

Describing a situation where a change in the price of a good or service has a relatively small effect on the quantity demanded or supplied.

Price Elasticity

The responsiveness of the quantity demanded or supplied of a good to a change in its price, commonly referred to in economics as price elasticity of demand or supply.