you decide whether to eat one more slice of cheesecake based on how hungry you feel. which economic principle does this statement best represent?

That statement best represents the economic principle of “how much” is a decision made at the margin (also called marginal decision making).

Quick Scoop

You’re deciding whether to have one more slice, not whether to eat cheesecake at all, so you’re thinking about the additional (marginal) slice. You compare the extra satisfaction from that slice to the extra cost (feeling too full, health concerns, guilt, etc.), which is exactly what economists mean by making a decision at the margin.

So, the correct economic principle is:

“How much” is a decision at the margin. ✅

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