An Infant Who Has Just Started Cooing and Gurgling in Response

question 184

Multiple Choice

An infant who has just started cooing and gurgling in response to smiles and attention from its parents is about ________ months old.

• A) two
• B) four
• C) six
• D) eight
• E) ten

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Definitions:

Brain

The central organ of the human nervous system, responsible for processing information and controlling bodily functions.

Agonist

A substance that activates a receptor to produce a biological response.

Antagonist

in pharmacology, a substance that acts against and blocks an action. In literature, a character or force in conflict with the main character.

Neurotransmitter

Chemical messengers in the brain and body that transmit signals from one nerve cell to another.