A Police Officer Visits Ms

question 38

Multiple Choice

A police officer visits Ms.Duhaime's first-grade class one morning to talk about safety precautions at home and on the street.The students listen quietly and attentively while the officer speaks.At the end of the visit, the officer and teacher agree that the students' good behavior warrants some kind of reinforcement.Given what we know about effective reinforcers at different grade levels, their best choice would be:

• A)Twenty minutes of free time at the end of the day
• B)Plastic toy police "badges" awarded by the officer
• C)A letter home to parents describing the children's good behavior
• D)An official-looking "good behavior" certificate given at the school's award ceremony the following week

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Definitions:

Perfect Competitor

An idealized market structure characterized by a large number of small firms, each being a price taker, with no single firm able to influence the market price.

Long Run

A period in economics where all factors of production and costs are variable, allowing complete industry adjustment.

Marginal Revenue

The extra revenue generated from the sale of an additional unit of a product or service.

Marginal Cost

Marginal cost is the cost of producing one additional unit of a good or service, crucial for decision-making processes in economics and business.