Explanation: A trademark is a name, symbol, or slogan with which a product is identified. Its uniqueness makes the product noticeable among the same type of products. For example, Pentium and Athlon are brand names of the CPUs that are manufactured by Intel and AMD, respectively. The trademark law protects a company’s trademark by making it illegal for other companies to use it without taking prior permission of the trademark owner. A trademark is registered so that others cannot use identical or similar marks. Answer: C is incorrect. A trade secret is a formula, practice, process, design, instrument, pattern, or compilation of information which is not generally known. It helps a business to obtain an economic advantage over its competitors or customers. In some jurisdictions, such secrets are referred to as confidential information or classified information. Answer: B is incorrect. A copyright is a form of intellectual property, which secures to its holder the exclusive right to produce copies of his or her works of original expression, such as a literary work, movie, musical work or sound recording, painting, photograph, computer program, or industrial design, for a defined, yet extendable, period of time. It does not cover ideas or facts. Copyright laws protect intellectual property from misuse by other individuals. Answer: D is incorrect. A patent is a set of exclusive rights granted to anyone who invents any new and useful machine, process, composition of matter, etc. A patent enables the inventor to legally enforce his right to exclude others from using his invention.