Municipal planners in City X recently replaced traditional asphalt in high-density commercial zones with permeable interlocking concrete pavers to reduce storm runoff and mitigate the urban heat island effect. Although the pavers successfully absorbed rainfall and lowered surface temperatures, routine road maintenance costs rose significantly because traditional mechanical rotary sweepers dislodged the stabilizing joint sand between the pavers, requiring frequent re-sanding. To eliminate these extra maintenance expenses while preserving the environmental benefits, the city plans to replace its mechanical sweepers with high-pressure suction vacuum sweepers. However, this plan is unlikely to achieve its intended cost-saving goal because __________
Which of the following most logically completes the passage?
- high-pressure suction sweepers pull joint sand from between interlocking pavers at a rate equal to or greater than mechanical rotary sweepers doCevap
- Bthe fuel required to operate high-pressure suction sweepers throughout commercial zones will significantly increase municipal expenditure
- Cpermeable interlocking concrete pavers become less effective at absorbing storm runoff when joint sand is absent
- Dmechanical rotary sweepers reduce ambient surface temperatures more effectively than suction sweepers do
- Ecommercial zones experience higher volumes of storm runoff than residential zones during heavy rainfall events