Answer: C. "First, drivers will likely be less aware of their surroundings than if they had been driving all along.''
Step-by-step explanation:
The author believes that there is a chance that driverless cars will safety issues that could be just as or even more dangerous than the ones created by having a human drive the car.
One issue given was that drivers who now rely on the car driving themselves will be less aware of their surrounding. The premise here is that accidents are better prevented if people are aware of what is happening around them as they drive so as to avoid any threats that may come up.
If this is taken away from drivers, and they have to take over driving for whatever reason from the automated driver, they would be at a disadvantage in reading situations because they had not been driving all along.