How do you maintain prrofessional ethics when a client asks you to do something questionable?

[Btaliat]

It is always better as a freelancer to be careful of some projects that can soil the image and reputation. That's why it is always important to reject politely any course and task that you know will surely not go in line with your standard. In the first instance, there is a need to have standard by which all your principles are based. Then make sure that you are working towards upholding your standard at any cost.