Seven-month-old gavin seems very content being held by his mother. when the new neighbor from across the street comes over to greet gavin, he turns his head away from the neighbor and starts to cry. what term best explains gavin's response to the neighbor?
a. social smile
b. stranger wariness
c. social referencing
d. resistant attachment

B

Explanation: The correct answer is letter B, social wariness. At that age, the infant will only recognize people by their smell, temperature, and some aspects of their face; being held by someone he doesn't recognize iniciates a "danger alert" because it knows that the person carrying it is a stranger, by crying its trying to get the attention back from its mother.

levels of production can be increased by technology while holding labor and capital constant, because increased technology makes the production process more efficient. subsequently, the lras curve is almost a vertical line, that can shift to the right, with an increase in technology.

the relationship between the lras curve and the ppc is that both can make the economy could grow. the ppc achieves that when it shifts outward because of more resources or technological advances while the lras curve shifts if more resources are developed or if there are technological advances.

the lras curve is a vertical line at an output level that represents the number of goods and services a nation can produce over a sustained period using all of its productive resources as efficiently as possible with all of the current technology available to it.

the production possibilities frontier (ppf) is a graphical device that is used for economic analysis of production decisions because the ppf measures the maximum possible combinations of two goods that an economy is capable of producing with its currently available resources and technology.

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