A word, symbol, name or device that a business uses to identify its goods and distinguish itself from competitors is known as:

A patent is a legal document granting the inventor exclusive rights to an invention, such as a new process or product, for a set period. A copyright is a type of intellectual property that gives its owner the exclusive legal right to copy, distribute, adapt, display, and perform a creative work, usually for a limited time. A trademark is a form of intellectual property that consists of a word, phrase, symbol, design, or a combination that identifies a product or service from a particular source and distinguishes it from others. A trade secret is information that a business keeps confidential to maintain a competitive advantage. 

The term that matches the context is 'trademark'. The correct answer is option C.