Identify which of the following examples is a type of form letter.

A form letter is a standard letter that is typically used for consistent communication across similar situations or recipients. These letters include predetermined content that can be easily customized with specific details, making them efficient for repeated use.

The work status note qualifies as a form letter because it often follows a specific template to communicate an employee's ability to work, addressing issues such as their return date, any limitations, and other relevant information in a standardized manner. This uniformity allows medical offices to handle such communications efficiently while still relating to individual cases.

In contrast, the other options represent more personalized forms of communication that are specifically tailored to particular situations or recipients, rather than a standardized format. This is what distinguishes a form letter from these other types of correspondence.