A collection of records created and stored in a computer is a(n)

The correct answer is a database. A database is specifically designed to organize, store, and manage data in a structured way. It allows for efficient retrieval and manipulation of information, making it essential for various applications, particularly in medical office settings where patient records, billing information, and appointment schedules need to be systematically handled.

In contrast, an application refers to software that performs a specific function, such as a word processing or spreadsheet application. An icon is a graphical representation used to symbolize programs or files on a computer, and a word processor is a type of application focused specifically on creating and editing text documents. None of these options fully encapsulate the concept of storing organized data like a database does. This is why a database is the best fit for the definition of a collection of records created and stored in a computer.