Which type of object is utilized by Row iterators?

Row iterators are primarily designed to work with query results, which are collections of data returned from a database or other data source as a result of a query. When you use a row iterator, you are able to loop through these query results, accessing each record one at a time. This is essential in applications where you need to display or manipulate multiple records systematically.

In contrast, data entities represent structured data models that map to business objects in Guidewire, while event handlers are used to manage events such as user actions within the application. Form controls refer to the user interface elements that capture user input. None of these are specifically meant to handle the iteration through query results like row iterators do, making query results the correct choice in this context.