Which of the Following Is True

question 67

Multiple Choice

Which of the following is true?

• A) Economists formulate a theory and then sometimes try to verify the theory with real-world observations.
• B) Real-world observations are used to formulate an economic theory,but this is of little use to policymakers.
• C) Once an economic theory is developed,it is rarely tested against real-world observations.
• D) When a policymaker has an idea about how to advance economic growth,he or she will ask an economist to formulate a theory,and then this will be compared to real-world observations.
• E) Real-world observations motivate economists to formulate theories about how economic growth evolves,and these theories are then used and reevaluated as new data become available.

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Definitions:

Brightness

The perception of the intensity of light emitted, transmitted, or reflected by an object, making it appear more luminous or less so.

Light Receptors

Specialized cells in the eye (rods and cones) that are sensitive to light, allowing for the sensation of vision.

Foveas

The small depression in the retina of the eye where visual acuity is highest, containing a high concentration of cones, responsible for sharp central vision.

Rods

Photoreceptor cells in the retina responsible for vision in low light conditions.