The correct answer is: procedures.
A report module is a code module that contains code for all event procedures triggered by events occurring on a specific report or its controls. Event procedures are subroutines that are called when an event occurs. For example, a report module might contain an event procedure that is called when the report is opened, or when a particular control on the report is clicked.
Properties are attributes of an object that define its characteristics. For example, the Text property of a label control defines the text that is displayed in the control.
Macros are sequences of commands that can be executed by a single command. For example, a macro might be used to open a report, print it, and then close it.
Commands are instructions that are executed by the computer. For example, the Print command is used to print a document.
In conclusion, the correct answer is: procedures.