The Most Common Cause of Mental Retardation in the United

question 31

Multiple Choice

The most common cause of mental retardation in the United States is

• A) thalidomide.
• B) spina bifida.
• C) fetal alcohol syndrome.
• D) anencephaly.

---

Definitions:

Consumer Surplus

the difference between what consumers are willing to pay for a good or service and what they actually pay.

Market Price

The price at which a product or service is sold in the open market, determined by supply and demand.

Willing To Pay

The maximum amount a consumer is prepared to spend on a good or service.

Costs Of Production

The total expenses incurred in the manufacture of a product or the offering of a service.