Final answer:
Over the past 30 years, there has been a decrease in automobile alcohol-related fatalities, influenced by stricter DUI laws, safety campaigns, and vehicle improvements (option b).
Step-by-step explanation:
In the past 30 years or so, the number of automobile alcohol-related fatalities has decreased. This trend is a result of various factors such as the implementation of stricter DUI laws, awareness campaigns by organizations like (MADD), and improvements in vehicle safety. While there have been fluctuations in the numbers from year to year, the overall trend has been a decline in fatalities related to impaired driving. Efforts such as the National Minimum Alcohal consumption Age Act of 1984, which MADD lobbied for, and changes in societal attitudes towards alcohal consumption and driving have contributed to this reduction.
Hence, the answer is option b.