Which of the Following Would Be an Example of Omission

Which of the following would be an example of omission training?

A) You drink less beer than you once did, because you feel sick after drinking more than one glass.
B) Because you drive recklessly, you temporarily lose the privilege of driving the family car.
C) Your employer gives you bonus pay for working overtime.
D) You turn off a dripping faucet, ending the "drip-drip-drip" sound.