My boss . . . . . . . . my request to increase my allowance.

refused
denied
resisted
withheld

The correct answer is: A. refused

The other options are:

  • B. denied: to state that something is not true or correct.
  • C. resisted: to try to prevent something from happening or being done.
  • D. withheld: to not give or provide something that is asked for.

In this case, the boss refused to increase the allowance, which means that they did not agree to do it.