The best and most correct answer among the choices provided by your question is the second choice or letter B. There are now 200 million drivers are there in the United States presently.
In 2009, 87 percent of the driving-age population (age 16 and over) have a license. There are 685 drivers for every 1,000 residents. In 1960, just a few years after all states required driver licensing, there were only 487 drivers for every 1,000 residents. In 1970, 112 million drivers were licensed.
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