Which of the following is an example of a fanciful trademark?

A fanciful trademark is a term that has been created specifically for the purpose of serving as a trademark. Such trademarks are generally invented words with no prior meaning or usage in relation to the goods or services they represent.

Exxon® for petroleum exemplifies a fanciful trademark because it is a made-up word that does not have any existing connection to petroleum or any other products before it was coined for such use. The term was invented by the company and has become associated with their products through continuous use and consumer recognition.

In contrast, Apple® for computers is a distinctive name but not fanciful since "apple" is a commonly known word that refers to a fruit. Sofa® for furniture is also not fanciful because "sofa" is a generic term for a type of furniture. Sandwich® for food products similarly uses a word that is widely recognized and in use before being adopted as a trademark, making it descriptive rather than fanciful.