When Talking About Economic Profits in a Perfectly Competitive Market,the

question 21

Multiple Choice

When talking about economic profits in a perfectly competitive market,the difference between the long run and the short run is that in the short run,firms

• A) can earn positive economic profits,but in the long run,firms have zero economic profits.
• B) can earn negative economic profits,but in the long run,firms have zero economic profits.
• C) can earn positive or negative economic profits,but in the long run,firms have negative economic profits.
• D) earn negative economic profits,but in the long run,firms have positive economic profits.
• E) can earn positive or negative economic profits,but in the long run,firms have zero economic profits.

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Definitions:

Neurotransmitters

Chemicals that transmit signals across a synapse from one neuron to another 'target' neuron in the nervous system.

Inhibitory Role

The function of certain processes or substances in slowing down or stopping the activity of neural or biochemical pathways.

GABA

GABA, or Gamma-Aminobutyric Acid, is a neurotransmitter in the brain that plays a key role in regulating neuronal excitability and is involved in inducing relaxation and sleep.

Serotonin

A neurotransmitter in the brain that plays a critical role in mood regulation, appetite, sleep, and other bodily functions.