The correct answer is true.
It is true that horizontal mobility occurs when an individual takes another job that keeps him in the same social class.
We are talking about sociological terms that refer to social mobility, the movement of citizens within a social stratification system that indicates the grade of advancement when they have a new job that increases or not their income and status. In this case, horizontal mobility occurs when an individual takes another job that keeps him in the same social class. Upward mobility means that the individual moved upward in the social hierarchy due to a new job. Downward mobility is the opposite.
