Name one reason why the Americans declared independence from Britain.

What does this answer mean?

There were many reasons the Americans declared independence, and you only need to name one. USCIS accepts ten: high taxes, taxation without representation, British soldiers staying in Americans' houses (boarding or quartering), not having self-government, the Boston Massacre, the Boston Tea Party (Tea Act), the Stamp Act, the Sugar Act, the Townshend Acts, or the Intolerable (Coercive) Acts.

Most of these come down to one complaint: the colonists were governed and taxed by the British Parliament, where they had no representatives. "Taxation without representation" sums that up. The Stamp Act, Sugar Act, Townshend Acts, Tea Act, and Intolerable Acts were laws passed in Britain that the colonists objected to, and the Boston Massacre and Boston Tea Party were clashes and protests in Boston in the years before the war.

The Declaration of Independence itself lists complaints against the British king, including imposing taxes without the colonists' consent and keeping large groups of soldiers among them, which is what quartering means.

At the interview, the most common answer is "taxation without representation."