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Cohort differences can be described as the major explanation offered to account for the differences in the pattern of iq stability or decline over adulthood shown in cross-sectional versus longitudinal studies.
<h3>What is meant by cohort difference?</h3>
Cohort is the term that tells us of the people that are around or about the same age.
This is used to refer to the way that the people of different ages react or do things at a particular point in time.
Read more on cohort differences here:
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Answer
Production Possibility Frontier
Explanation
The Production Possibility Frontier (PFF) is a curve depicting all maximum output possibilities for two goods, given a set of inputs consisting of resources and other factors. The PPF assumes that all inputs are used efficiently. The (PFF) represents the point at which a country's economy is most efficiently producing its goods and services and, therefore, allocating its resources in the best way possible.
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I want to say A . Hope this helps :)