What type of motions include those that are secondary in parliamentary procedure?

The correct answer is subsidiary motions because they are specifically designed to assist in the management of other main motions. These motions are secondary because they do not stand alone; instead, they are used to modify, delay, or dispose of a main motion. For example, a subsidiary motion might propose to amend the main motion or to refer it to a committee for further review.

Understanding the role of subsidiary motions is crucial in parliamentary procedure, as they help facilitate structured discussion and decision-making regarding the main motion being considered. They allow members to effectively influence the decision-making process by proposing adjustments or alternative actions related to the main motion.

In contrast, incidental motions typically arise out of the business being conducted, and they deal with specific matters of procedure, while privileged motions are those that are of such importance that they can interrupt the consideration of other business (like a motion to adjourn). Although these types of motions are vital in parliamentary practice, subsidiary motions uniquely fulfill the role of directly addressing and modifying other motions, which is why they are categorized as secondary.