Answer:
Volatility
Explanation:
Volatility can be defined as instability and is characterized by a long-term pattern of unstable movements
In the scenario, Andrew has been highly unstable in his job patterns
Andrew initially worked with a travel website for few months and then became self-employed by starting a martial arts school, where he taught karate to teenagers.
Secondly, After an year, he closed the school and joined an advertising firm.
Thirdly, After two years, he quit the advertising firm and became self-employed as a freelance music composer.
Then the only term that indicates the changes in Andrew's employment structure is Volatility.