Question

effect of blood alcohol concentration (bac) on motor vehicle crashes
relative likelihood of causing a crash
blood alcohol concentration
about how much higher is the risk of a vehicle crash at a bac of 0.10 percent than a bac of 0.00 percent?
about the same
about twice as likely
about 5 times as likely
about 10 times as likely

Explanation:

By observing the graph, when BAC is 0.00, the relative likelihood of causing a crash is close to 1. When BAC is 0.10, the relative likelihood is around 10. So the risk at BAC 0.10 is about 10 times higher than at BAC 0.00.

Answer:

about 10 times as likely