Answer: Structural Mobiility
Explanation:
Structural Mobiility can be described as changes that enable a whole group of people to either move up or down the economic class ladder.
Structural mobility is attributed to the changes in society or company as a whole, not just personal changes.
The changes done in John's illustration is a social change where a job that can be performed by humans are now performed by robots.
This change negatively affected John and his manufacturing company thereby bringing down John in the economic ladder as he moved down from the Middle class to a lower social class.