In the last paragraph, the word "scrapped" can be best replaced by ______.

A．the rise of bus fares
B．the increased number of private cars
C．the improvement of the commuter railroad service
D．the poor condition of the transportation infrastructure

A．it is urgent to pass laws for gun control in the U.S.
B．people occupying high positions are more prone to crime
C．many criminals are intelligent enough to escape punishment
D．empty houses in the Philippines are often guarded by watch dogs