Suppose the Figure Below Shows Annie's Demand Curve for Physical

question 16

Multiple Choice

Suppose the figure below shows Annie's demand curve for physical therapy. The marginal cost of each visit to the physical therapist is $150. If Annie had to pay the entire marginal cost of each visit to the physical therapist, then she would choose to have ­______ visits a year.

• A)40
• B)25
• C)10

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Definitions:

Operational Sex Ratio

The ratio of sexually receptive males to females in a population, affecting mating behavior and competition.

Opportunity For Selection

Refers to the variance in fitness within a population. When there is no variance in fitness, there can be no selection; when there is large variance in fitness, there is a great opportunity for selection. In this sense, the opportunity for selection constrains the intensity of selection that is possible.

Male Signal

A form of communication used by male animals to attract females, assert dominance, or deter rivals, often involving visual displays, sounds, or chemical signals.

Sensory Bias

A concept in evolutionary psychology and ethology suggesting that preference for certain traits evolves because it exploits pre-existing preferences within the sensory system of an organism.