In the united states the degree of individual income mobility (that is, the degree to which people move from higher to lower or lower to higher income groupings)

a. rigid in both directions.
b. flexible in both directions.
c. flexible upward but rigid downward since high income perpetuates itself from generation to generation.
d. flexible downward but rigid upward since most low-income people never rise significantly above the poverty level.

The correct answer is letter "B": flexible in both directions.

Explanation:

The ability that an individual, family or group of people develop to improve or worsen their economic condition is called economic mobility. It is measured in income terms and particularly, in the U.S. is flexible in both directions since, according to studies, Americans have proved to be able to get better living conditions but some of them have gone from good economic situations to poverty.

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