logical

Of, relating to, in accordance with, or of the nature of logic.

Based on earlier or otherwise known statements, events, or conditions; reasonable.

Reasoning or capable of reasoning in a clear and consistent manner.

Of or pertaining to logic; used or taught in logic.

According to the principles of logic; so stated or conceived, as an argument, that the form guarantees its validity; unobjectionable from the point of view of logic; consistent.