Job satisfaction a. is always higher for younger workers. c. never changes for a worker. b. is at an all-time low, 15%. d. varies according to income and age.

Job satisfaction is defined as how the employee is contented with the work or job that he or she has. When it comes to job satisfaction, it varies depending on the standards or work preference of the employee but in general, this varies according to the income they get and also with age. Answer would be option D.