The transition word least would most likely be used in

A. a general-to-specific organization.

B. an order-of-importance pattern of organization.

C. a spatial organization.

D. a chronological organization.

B. an order-of-importance pattern of organization.

Least is a word that is used to show a smaller amount in size or significance. The significance part of the definition is important to your answer. When discussing order-of-importance, some things have a greater importance, such as the President of the United States vs the American citizen. The citizen could be considered least important when comparing the two while the President is more important.