In the declaration of independence, the colonists listed the complaints against the british government to prove they were being treated unfairly. what was one complaint in the declaration of independence?

You didn't provide a list of choices.  I'll give you some explanation.  A couple of key complaints were that the king kept armies in the colonies without consent of the colonial legislatures, and that the king imposed taxes without the colonists' consent.  

In the Declaration of Independence, Thomas Jefferson provided a list of "facts to be submitted to a candid world" to demonstrate that the British king had been seeking to establish "an absolute Tyranny over these States" (the colonial states which were declaring their independence).  

Jefferson's list of grievances included concrete reasons for action against the British government, such as:

These and additional items listed in the Declaration were meant to support the colonies' position that tyranny was standard operating procedure by the British monarchy, and therefore revolution was justified.

the indians crossed artificial boundaries, setting the stage for conflict

it allows shippers to carry commercial goods, which allows them to save time and money.