Question

most incidental motions:
o may be debated if permission is granted.
o are not debatable.
o may be debated after they are amended.
o are always debatable.

Explanation:

Incidental motions in parliamentary procedure are generally those that relate to the immediate situation at hand. They are not debatable as they deal with matters of procedure and do not pertain to the merits of the main question under consideration.

Answer:

are not debatable.