题目选项分析

Though the average urban commuter could travel on public rail systems more efficiently and at lesser cost than they can in private automobiles, many residents even of crowded cities prefer the feeling of autonomy inherent in driving one's own car.

Though the average urban commuter could travel on public rail systems more efficiently and at lower cost than he or she can in private automobiles, many residents even of crowded cities prefer the feeling of autonomy inherent in driving one's own car.