By 2 Months of Age, Babies Not Only Stare at Faces

question 215

Multiple Choice

By 2 months of age, babies not only stare at faces but also smile at them. This change is due to _____.

• A) increased interest in other humans
• B) increased awareness of caregivers' identities
• C) changes in willingness to interact with adults
• D) improvements in vision

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Definitions:

Complementary Goods

Goods that are often used together, where the use or value of one increases when used in conjunction with the other.

Cattle Feed

Food specifically prepared and given to cows, including grains, grasses, and other dietary supplements to maintain and improve health.

Demand Curve

A graph depicting the relationship between the price of a good or service and the quantity demanded for a given period, typically illustrating an inverse relationship.

Beef Consumption

The amount of beef eaten by individuals, populations, or specified groups over a given period, often measured in kilograms or pounds per capita.