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Which of the following situations involves an external cost?
Hunger-Triggering Hormone
A biochemical substance, such as ghrelin, that signals the body to feel hunger, prompting food intake.
Blood Sugar
The concentration of glucose in the bloodstream, essential for providing energy to cells, and critical in managing conditions like diabetes.
Maslow's Hierarchy
A theory in psychology that arranges human needs in a pyramid, with basic needs at the bottom and self-actualization at the top.
Basic Need
Fundamental requirements necessary for sustaining human life, including food, water, shelter, and safety.
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