Studies of London taxi drivers, who must memorize the city's complex street network to obtain a license, found that drivers had a significantly larger posterior hippocampus than non-drivers. The longer a driver had been working, the more pronounced this enlargement. After retirement, however, follow-up scans showed gradual reduction of the hippocampal region toward the size found in the general population.
Which conclusion most logically follows from the passage?
- A
All taxi drivers eventually develop identical brain structures regardless of experience
- Bcheck_circle
The brain structure changes appear to depend on continued use rather than being permanent
- C
London's street layout is uniquely suited to brain development
- D
Other professions cannot produce measurable brain changes
Explanation
Reduction after retirement signals use-dependence, supporting A. B overgeneralizes; C and D are unsupported.