Economists use the mechanism of supply and demand to study:

An increase in the price level causes a ________ the IS curve and a ________ the aggregate demand curve

A) movement up along; movement down along B) shift to the right of; movement down along C) movement down along; movement down along D) shift to the left of; movement up along

"When workers already have a large quantity of capital to use in producing goods and services, giving them an additional unit of capital increases their productivity only slightly.". This statement

a. represents the traditional view of the production process. b. is an assertion that capital is subject to diminishing returns. c. is made under the assumption that the quantities of human capital, natural resources, and technology are being held constant. d. All of the above are correct.