Question

what do statistics on income mobility in the united states show?
a. over time, income mobility has varied. sometimes income mobility is significant and other times it is almost nonexistent.
b. over time, there is significant income mobility.
c. over time, there is very little income mobility.
d. there are no studies on income mobility because income mobility is impossible to measure.

Explanation:

Income mobility refers to the movement of individuals or families up or down the income ladder over time. Studies on income mobility in the United States show that over time, there is significant income mobility. This means that people can move from one income group to another, either upwards or downwards. Option A is incorrect because income mobility is not sometimes nonexistent. Option C is also incorrect as it contradicts the findings of significant income mobility. Option D is wrong because there are studies on income mobility, and it is not impossible to measure.

Answer:

B. Over time, there is significant income mobility.