单项选择题

一边开车一边打电话更容易发生交通事故,这是因为( )。

A.driving and talking on the phone compete for attentional resources and talking on the phone becomes an automatic process
B.driving and talking on the phone compete for attentional resources and driving becomes an auto matic process
C.talking is a well—practiced behavior
D.driving is a well—practiced behavior