Opportunity Cost Exists Because

question 22

Multiple Choice

Opportunity cost exists because

• A)technology is fixed at any point in time
• B)the law of comparative advantage is working
• C)resources are scarce but wants are unlimited
• D)the value of lost opportunities varies from person to person
• E)efficiency is measured by the monetary cost of an activity

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Definitions:

Nuclear Medicine

A branch of medicine that uses radioactive substances in diagnosis and treatment of diseases.

Ionized Radiation

Radiation that carries enough energy to liberate electrons from atoms or molecules, thereby ionizing them.

Nuclides

Distinct kinds of atoms or nuclei characterized by a specific number of protons and neutrons.

Radiopaque Substance

A substance that does not allow X-rays or similar radiation to pass through, appearing white or light on radiographic images, used in contrast-enhanced imaging.