Economics involves marginal analysis because:

A) most decisions involve changes from the present situation.
B) marginal benefits always exceed marginal costs.
C) marginal costs always exceed marginal benefits.
D) much economic behavior is irrational.

Marginal Analysis

The comparison of marginal (“extra” or “additional”) benefits and marginal costs, usually for decision making.

Marginal Benefits

The uplift in utility or enjoyment gained through consuming or producing an added unit of a good or service.

Marginal Costs

The added cost incurred when one more unit of a good or service is produced.