Step 1: Understanding Ebenezer Howard's Garden City.
Ebenezer Howard, a social reformer, conceptualized the "Garden City" in his 1898 book *Garden Cities of To-morrow*. His aim was to merge the advantages of urban and rural living while eliminating their drawbacks.
Step 2: Population limit.
Howard stipulated a maximum population of 32,000 for a Garden City, with the town itself intended to house approximately 22,000 residents. The remaining population was to reside in the surrounding agricultural areas.
Step 3: Matching with options.
Evaluating the provided options: - 10,000 → Insufficient, not Howard's specified limit.
- 22,000 → Correct, aligns with the proposed population for the town center.
- 32,000 → Represents the total population including the periphery, not the core Garden City.
- 58,000 → Incorrect, not proposed by Howard.
Therefore, the correct answer is 22,000 persons.
Final Answer: \[\boxed{22,000}\]