Which Statement About Economic Models Is TRUE

question 123

Multiple Choice

Which statement about economic models is TRUE?

• A) In practice, it is easy for an economist to isolate economic variables.
• B) Economists hold all other variables constant in order to see the impact of one particular variable.
• C) To be useful, an economic model must include every detail possible and not be an abstraction.
• D) Complex models are always better than simple ones.

---

Definitions:

Mass Number

The total number of protons and neutrons in an atom's nucleus, determining the atom's mass.

Protons

Positively charged particles found within an atom's nucleus, contributing to the atom's mass and charge.

Neutrons

Subatomic particles found in the nucleus of an atom, with no electric charge and a mass slightly larger than that of a proton.

X-rays

Electromagnetic waves with wavelengths shorter than those of visible light, capable of penetrating solids and ionizing gases, widely used in medicine and industry for imaging and diagnostic purposes.