A．Their concerns are likely to diminish in the future.
B．Their concerns are completely justified.
C．Their concerns suggest that voters need better information.
D．Their concerns have mostly been disregarded by governments.
A．The bridge will be well maintained in the long term.
B．The company will not raise tolls.
C．Other companies will be interested in buying the bridge.
D．Voters will pressure the government to buy back the bridge.
A．It is likely that life does not exist.
B．Life will not be discovered in the near future.
C．The life there would not be similar to life on Earth.
D．Life could possibly be found even on gas giants.