Graph 7-4 
-In Graph 7-4, the efficient price-quantity combination is:
Definitions:
Children
Young human beings below the age of puberty or below the legal age of majority.
Escape Learning
A type of learning in which an organism acquires a response to terminate an unpleasant stimulus.
Tension Headache
A common type of headache characterized by a feeling of tightness around the forehead or back of the head and neck.
Drinking Coffee
The consumption of a beverage made by brewing ground coffee beans, often enjoyed for its stimulating effect due to caffeine.
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