A．It has inherent difficulty comprehending face-to-face communication.
B．It has post-natal difficulty dealing with cell phone communication.
C．It can't carry on two evolutionarily novel tasks at the same time.
D．It needs a great deal of cognitive energy to handle driving a car.

A．Talking to people face-to-face is evolutionarily novel.
B．Driving a car is evolutionarily familiar.
C．Having a cell phone conversation is evolutionarily familiar.
D．Sending short messages is evolutionarily novel.

A．Strengthen the legal supervision over drivers using a cell phone.
B．Invent a new technology that can create an image of the person we're talking to.
C．Encourage people to use the hands-free devices when driving a car.
D．Increase penalties for texting or using a cell phone while driving.