Which two motions both require a second, are debatable, and require a majority vote to be adopted?

The correct choice identifies two motions that are indeed both debatable, require a second, and need a majority vote for adoption. Among the options, the two motions that fit this description perfectly are "Postpone Indefinitely" and "Amendment."

"Postpone Indefinitely" allows members to delay consideration of a main motion and can lead to the defeat of that motion without directly voting on it. It is debatable, which permits members to discuss the merits of postponing the discussion. Furthermore, a majority vote is needed to approve this kind of motion.

The "Amendment" motion allows members to modify the wording of a main motion being considered. Amendments can be debated and require a majority vote for adoption, allowing members a chance to express their opinions on how to alter the original motion effectively.

The other options presented do not satisfy all the criteria laid out in the question. For example, "Division of the Assembly" does not need to be debatable and typically does not require a vote to be called; it pertains to verifying the accuracy of a voice vote. Likewise, "Recess" does require a second and majority vote, but it is not debatable. Understanding the specific characteristics and rules governing each motion is