Microeconomics Test 1 Study Guide Chapter 1 1. Define Economics 2. Define the Scarcity Principle 3. Define the Cost-Benefit Principle 4. Janie must choose to either mow the lawn or wash clothes. If she mows the lawn, she will earn $30, and if she washes clothes, she will earn $45. She dislikes both tasks equally and they both take the same amount of time. Janie will therefore choose to ______ because it generates a ______ economic surplus.