What process would you use in a formal business meeting if you had an idea you wanted the group to consider?

In a formal business meeting, if you have an idea you want the group to consider, the appropriate process is to initiate a main motion. A main motion is a formal proposal put forward for discussion and decision by the group. It allows a member to present a specific idea or course of action so that it can be debated and potentially adopted by the assembly.

Once a main motion is made, it becomes the focus of the meeting's discussion and can lead to further consideration, recommendations for modifications, or amendments. Presenting a main motion is a fundamental part of parliamentary procedure and provides a structured way for members to contribute their ideas and suggestions, ensuring that everyone has the opportunity to participate in the decision-making process.

The other options, while they may sound relevant, do not accurately describe the procedural step for introducing a new idea. Main amendment refers to altering an existing motion, propose debate does not exist as a formal procedure, and substantive discussion generally refers to a broader conversation than the specific act of making a motion. Therefore, initiating a main motion is the correct and recognized method for proposing an idea in a formal meeting context.