In the Fourth Week After Conception, a Minuscule Blood Vessel

question 183

Multiple Choice

In the fourth week after conception, a minuscule blood vessel that will become the _____ begins to pulsate.

• A) lungs
• B) stomach
• C) kidneys
• D) heart

---

Definitions:

Marginal Revenue

The increase in revenue resulting from the sale of one additional unit of product.

Demand Schedule

A table that shows the quantity of a good or service demanded at different prices.

Natural Monopolist

A single firm that can supply a good or service to an entire market at a lower cost than could two or more firms, leading to a natural monopoly situation.

LRAC Curve

The Long-Run Average Cost curve, showing the lowest average cost at which a firm can produce any given level of output in the long run when all inputs are variable.