题目选项分析

Some people believe that the exhaustion of a long road trip poses the biggest threat to a driver’s safety. Other driving situations, however, are far more dangerous. The sense of relaxation evoked by familiar neighborhoods induces drivers to rely more on muscle memory and less on active input from their surroundings. Such major lapses in attention are the reason most car accidents occur near the home.

Which of the following, if true, most seriously weakens the argument?

【选项】There were fewer car accidents last year than in previous years.