Which type of motion must be made by a member who voted with the prevailing side?

The correct response is a motion to reconsider because this type of motion is specifically designed for individuals who supported the winning side of a decision in order to bring that decision back before the assembly for further discussion and possible reversal. This provision allows those who initially agreed with the majority to express a change of heart or offer new information that may influence the outcome differently upon a second consideration.

The motion to reconsider provides a mechanism for the assembly to revisit decisions that may have been made hastily or without full information, thereby promoting more robust decision-making within the group. The requirement that only those on the prevailing side can make such a motion ensures that the process remains focused on refining and potentially improving the group's decisions rather than indiscriminately challenging any past actions.

The other types of motions listed serve different purposes; for instance, a motion to amend modifies an existing motion, a motion to table temporarily suspends consideration of an issue, and a motion to adjourn ends the meeting. None of these motions are restricted to those voting on the prevailing side, nor do they aim to challenge a decision that has already been made.