Suppose That for the Past Two Months, You Have Studied

question 91

Multiple Choice

Suppose that for the past two months, you have studied economics one hour a day. You now decide to study economics two hours a day. For the past two months, _.

• A) the opportunity cost of studying economics must have risen.
• B) your marginal benefit from studying economics an hour must have been greater than its marginal cost
• C) your marginal cost of studying economics for an hour must have exceeded its marginal benefit
• D) the marginal cost of studying economics must have fallen

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Definitions:

Arrector Pili

Small muscles attached to hair follicles in mammals, contraction of which causes the hair to stand on end.

Blood Ph

The measure of acidity or alkalinity of the blood, which is tightly regulated around a value of 7.4.

Apocrine Sweat Glands

Specialized sweat glands that produce a thicker, milky secretion and are typically associated with hair follicles in underarm and genital areas.

Thermoregulation

The physiological process by which an organism regulates its internal temperature within a certain range, despite external changes.