Answer: Option 'D' is correct.
Explanation:
Plumber is paid less than the minimum hourly wage.
As Salary of Bartender is fixed by the Bar owner.
2) The salary of electrician has fixed charges with hourly wages.
3) Hotel manager gets the salary from the particular hotel.
4) But the wages of plumber varies, he is usually get less than the minimum hourly wage.
Hence, Option 'D' is correct.