单选题 The Robogat can quickly get through to the scene of a fire because ______.

【正确答案】 C
【答案解析】第一段第五句讲到Robogat can travel at about 50 kilometers per hour.,说明其速度快,可以采取quick action。第二段又提到it runs on a monorail suspended from the roof of the tunnel。综合这两点得出Robogat can quickly get through to the scene of a fire的原因,选项C正确。