Maria Is Studying the Effects of Calcium on the Development

question 141

Multiple Choice

Maria is studying the effects of calcium on the development of children.So,she administers varying levels of calcium to two groups of children,one group consisting of children aged five and the other group consisting of children aged ten.She studies the growth rate of these two groups regularly over a period of one year.On the basis of the given evidence,it would be most accurate to say that Maria is using the _____ research.

• A)cross-sectional
• B)factorial
• C)longitudinal
• D)single case experimental

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Definitions:

Demand Curve

A graphical representation that shows the relationship between the price of a good and the quantity demanded by consumers.

Consumer Surplus

The gap between the price consumers are ready to pay for a good or service and the price they end up paying.

Market Demand

Represents the total quantity of a good or service that all consumers in a market are willing and able to purchase at various prices.

Music Downloads

Digital files of music tracks that can be legally or illegally downloaded from the internet to a computer or mobile device.