In Late Adulthood, the Brain Shrinks and Total Brain Mass

question 113

Multiple Choice

In late adulthood, the brain shrinks and total brain mass declines, beginning at age 30 and accelerating at age 60, so that by age 80, most people have lost __________ of their peak brain mass.

• A)5-10%
• B)15-25%
• C)25-45%
• D)45-60%

---

Definitions:

Rent

A periodic payment made by a tenant to a landlord for the use of land, a building, or other property.

Demand

The quantity of a good or service that consumers are willing and able to purchase at various prices during a given time period.

Supply Curve

A graphical representation of the relationship between the price of a good and the quantity of the good that suppliers are willing to produce and sell.

Perfectly Elastic

Describes a situation in which the demand or supply for a product responds immediately and proportionately to changes in price, leading to an infinite elasticity.