Question

which one of the following is not an incidental motion?:
parliamentary inquiry
division of the assembly
postpone indefinitely
point of order

Explanation:

Incidental motions relate to the immediate situation in a meeting. Parliamentary Inquiry, Division of the Assembly, and Point of Order are incidental motions. Postpone Indefinitely is a main - motion related to the fate of a main question, not an incidental motion.

Answer:

Postpone Indefinitely