Final answer:
The study technique that most closely aligns with organizing information into subdivisions for easier study and recall is chunking. This strategy involves grouping complex information into manageable units, which fits the student's approach to studying with a diagram featuring basic divisions and subdivisions.
Step-by-step explanation:
Based on the description provided, the study technique that aligns most closely with the approach of dividing the system into subdivisions and then studying these separate parts is chunking. Chunking is a memory strategy that involves organizing information into manageable units or chunks. This is particularly helpful when there is a complex diagram with various divisions and sub-divisions, as it allows the information to be grouped into segments that are easier to memorize and recall.
Another applicable strategy from the information provided could be elaborative rehearsal, which entails thinking about the meaning of new information and linking it to already existing knowledge, hence making it more memorable. However, chunking directly relates to the structure of organizing and breaking down complex information into basic divisions and subdivisions, suggesting it is the most relevant strategy in this scenario.