Final answer:
D. through a description and history of the "Moon Trees" program. The text's central idea is developed through a description and history of the 'Moon Trees' program.
Step-by-step explanation:
The text's central idea is developed through a description and history of the "Moon Trees" program. The text provides information about the program's origins, its goals, and its accomplishments. It explains how the program was initiated, who was involved, and the impact it has had on the environment. By presenting these details, the text effectively develops the central idea of the "Moon Trees" program.