Which organizational pattern arranges natural divisions in a central idea according to recency, primacy, complexity, or the speaker’s discretion?

The correct answer to the following question will be "Topical Organization".

Explanation:

This design is perhaps frequently utilized format and will tend to work when the other patterns have not been. A topical pattern organizes knowledge within the same bigger topic as per the various sub-topics, or even the "types" of things falling in just a broader category or structure natural classes as per rectitude, primacy, and ambiguity in the core idea.

Therefore, Topical Organization is the right answer.