The correct answer to this open question is the following.
Although there are no options attached, we can say the following.
British officials made sure that colonial merchants followed trade laws.
They elaborated Writs in which British officials clearly specified trade laws, what was allowed and what's not. British officials also required merchants in the American colonists to list every good on the ships so officials could approve the departure of the ship. Yes, they worked to stop smugglers from avoiding laws and taxes.
The English went beyond and decided to stop the colonist's cargo ships to search for smuggled merchandise as a preventive way to stop contraband.