When people who work in the same office or area take turns driving each other to work, rather than take*^*individuals vehicles to work separately, this is called a .
Question 1:
When people who work in the same office or area take turns driving each other to work, rather than take*^*individuals vehicles to work separately, this is called a ....... system.
A.carpool
B.streetcar
C.trolley car
D._
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