I find this to be the most interesting LR question I've come across, because I'm pretty darn sure it requires you to make an inference leap based on common sense. Rule #1 ...
How would you diagram the highlighted sentence. It has three conditional indicators ("if"- group 1 sufficient, "unless"- group 3 negate/sufficient and "cannot" group 4- negate, necessary)?
The reason why E doesn't help is because E requires us to go one more step to explain why people aren't wearing seat belts?(because they are not obeying the law?)
http://7sage.com/lsat_explanations/lsat-37-section-2-question-17/
... leaving me without access to 7 Sage! Luckily I had my ... idea was to first complete 7 sage using the old practice ... plan was to go through 7 sage again using the new ... was planning on mostly using 7 Sage for the LG section ...