What keyboard shortcut allows you to select from a list of classes in a script?

The keyboard shortcut that allows you to select from a list of classes in a script is the Ctrl + Spacebar combination. This shortcut is commonly used in various integrated development environments (IDEs) and code editors to invoke code completion features. When coding within ServiceNow, pressing Ctrl + Spacebar prompts a dropdown list that displays available classes, methods, and variables relevant to the context, facilitating quicker and more efficient coding by minimizing typing errors and reminding developers of available options.

The other options do not fulfill this function within the coding environment in ServiceNow. Shift + F10 generally serves different purposes depending on the specific application context, and is not related to code completion. The combination of Ctrl + Alt does not trigger any specific functionality regarding class selection in ServiceNow scripting. Similarly, Alt + Spacebar is often used for window management tasks and does not provide access to class lists in scripts. Thus, the specific functionality of Ctrl + Spacebar makes it the correct choice for selecting from a list of classes in a script environment.