Answer:
The two sentences that the author should add to the first paragraph to clearly establish the claim about the value of self-driving cars are:
Studies show that over 80 percent of car accidents are the result of human error, but self-driving cars can't get distracted, which makes them safer.
Self-driving cars are also more efficient because they are run by a computer that regulates speed and creates greater fuel economy.
These two sentences provide evidence for the safety and efficiency of self-driving cars, which supports the author's claim that they have value. The other two sentences are not directly related to establishing the claim about the value of self-driving cars.
Step-by-step explanation: