【单选题】
A <{p}>People are more involved in traveling by foot?×<{br/}><{/p}>
B <{p}>People travel much faster and farther.<{br/}><{/p}>
C <{p}>People get a lot of(fun from traveling.<{br/}><{/p}>
D <{p}>People have technically efficient ways of traveling.<{br/}><{/p}>
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