Trevor's business is the spicy chocolatier café chain. "the spicy chocolatier café" is

The correct answer is a trade name.

A trade name is just another way of saying a business name. Since Trevor owns a business, he needs to name is somehow so that he can fill in all paperwork and people will be able to know what business they are going in. His business, or trade name in this case is "The Spicy Chocalatier Cafe."