Which of the following is NOT a type of subsidiary motion?

A subsidiary motion is a type of motion used to assist in the handling of a main motion. It helps modify, delay, or refer the main motion to another group for further consideration. The correct answer indicates that "suspend the rules" does not fall under the category of subsidiary motions.

Suspending the rules is considered a privileged motion, which addresses the urgency or special circumstances of a situation, allowing members to bypass certain rules that might otherwise impede the progress of a meeting. In contrast, the other options—postpone indefinitely, amend, and commit—are all designed to interact directly with a main motion, making them subsidiary motions that help facilitate its discussion and decision-making process. This distinction is important to understand the different categories of motions within parliamentary procedures.