In oakland, california last year, 10,000 working-class people moved upward on the class ladder and, at the same time, 10,000 middle-class people moved downward. assuming this is correct, sociologists would consider this an example of mobility.

The case in Oakland is the example of the social mobility.

Explanation:

Social mobility is the movement of the class of people in the society. It may be from the higher class of social status to lower and lower status to higher.It is a relative term that determines the shift of social status in reference to social location. As 1000 people moved upward in class ladder as well as 1000 moved downward due to certain activities, this shows the social mobility of the people in that place.

They are called independent