Which motion is used to bring business before the assembly?

The motion that is used to bring business before the assembly is the main motion. This motion is fundamental in parliamentary procedures, as it introduces a new item of business for consideration. When a member of the assembly wishes to discuss a specific matter, they must present a main motion, which must then be debated and voted on.

Main motions are essential for guiding the assembly's discussions and decisions, as they serve as the starting point for any debate or decision-making process. Without the main motion, there would be no formal way to initiate topics for discussion, thereby hindering the assembly's ability to carry out its business effectively.

In contrast, restorative motions are typically concerned with revising or revoking previous actions rather than introducing new business. Subsidiary motions are used to assist in the handling of the main motion but do not initiate discussion on their own. The motion to adjourn is focused on closing the meeting rather than bringing new issues to the floor. Thus, the main motion stands out as the correct choice for introducing new matters to be addressed in the assembly.