Final answer:
The motion that is not debatable, not amendable, cannot be reconsidered, and requires a majority vote for adoption is the Motion to Adjourn.
Step-by-step explanation:
The motion that is not debatable, not amendable, cannot be reconsidered, and requires a majority vote for adoption is the Motion to Adjourn. This motion is used to end the current meeting and can be made by any member of the group. Once the motion is made, it requires a second and then a majority vote to pass.
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