Which of the Following Are Ways to Control Long-Distance Telephone

question 1

Multiple Choice

Which of the following are ways to control long-distance telephone costs?

• A) make most calls person-to-person calls
• B) make credit-card calls only
• C) use direct dialing most of the time
• D) all the above

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Definitions:

Neurotransmitter

Chemical substances that transmit signals across a synapse from one neuron to another in the brain and nervous system.

Hormone

A chemical substance produced in the body that influences physiological activity by being transported in tissue fluids such as blood to stimulate specific cells or tissues into action.

Endorphins

Neurotransmitters produced by the brain that act as natural painkillers and are also associated with feelings of pleasure or euphoria.

Neurotransmitters

Chemical messengers that transmit signals across a synapse from one neuron to another in the brain and nervous system.