The Key Concept That Serves as the Basis for the Study

question 141

Multiple Choice

The key concept that serves as the basis for the study of economics is:

• A) opportunity cost.
• B) unemployment.
• C) money.
• D) scarcity.

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Definitions:

Bitter Receptors

Sensory taste receptors located on the tongue that are responsible for detecting bitter substances, playing an essential role in taste perception.

Sour Receptors

Specialized sensory cells located in the taste buds that detect sour tastes.

Salty Receptors

Taste receptors on the tongue that detect the presence of salt, one of the basic tastes.

Dark Adaptation

The process by which the eyes increase their sensitivity to low levels of light, enabling vision in dim conditions.