Scientists Enroll 500 Healthy Adults in a Study and Collect

question 24

Multiple Choice

Scientists enroll 500 healthy adults in a study and collect dietary and other lifestyle information about the group.After 6 years,the scientists determine that study participants who ate at least 5 servings of fruits and vegetables daily were less likely to develop high blood pressure than participants who ate fewer than 5 servings of these foods daily.This study is an example of a(n) ____ study.

• A)prospective
• B)introspective
• C)retrospective
• D)nutritive

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Definitions:

Rent

A payment made for the temporary use of a good, service, or property owned by another.

Demand Shift

A change in the quantity of a product that consumers are willing and able to buy at each and every price level, caused by factors other than the product's price.

Normal Good

A good for which demand increases as consumer income rises and decreases when consumer income falls.

Substitute

A good or service that can be used in place of another to satisfy consumer needs or wants.