An excerpt from the civic innovation podcast *MetroPulse* features correspondent Sofia Morales discussing the deployment of autonomous urban delivery corridors:
'When the municipal transport authority initially authorized automated logistics drones across high-density residential districts, neighborhood associations immediately raised acute concerns regarding ambient noise, structural safety, and privacy. Preliminary test flights further exposed severe navigation bottlenecks during evening peak hours, causing frequent distribution delays and public skepticism. Rather than abandoning the automated fleet entirely, project engineers decided to smooth the rough edges of the underlying routing system. By recalibrating altitude thresholds, adjusting propulsion frequencies, and dynamically rerouting flight paths away from residential courtyards, transit officials successfully resolved early operational flaws and reduced community noise complaints by forty percent. What began as a contentious trial has ultimately yielded a reliable blueprint for modern metropolitan distribution.'
Based on the context of the audio report, which of the following best defines the phrase 'smooth the rough edges'?
- ATo physically grind down and polish the outer casing of delivery machinery
- BTo introduce strict regulatory prohibitions and limit delivery hours
- To correct minor deficiencies and refine the performance of a systemCevap
- DTo eliminate human oversight and expand drone fleet capacity