Studies reveal that people who are regular users of libraries purchase more books per year than do people who do not use libraries regularly.
Why this is right
The evidence in the original argument is comparing two groups, saying something is more prevalent in one than the other. In the original, it's "cars with devices get jacked/robbed more often than those without." In C, it's "regular library users buy more books that people who don't use libraries regularly." The conclusion in the original argument is that one thing does not prevent another: "Antitheft devices don't keep cars from being stolen" In C, it's "using libraries regularly doesn't keep patrons from buying books." The logic in the original argument overlooks a meaningful difference between the two things compared in the evidence: cars with antitheft devices are likely nicer/newer than cars without, and therefore more appealing targets for theives. In C, the author overlooks that people who use libraries regularly are likely bigger readers than those who don't use libraries, making them more likely to both use the library AND buy books. The logic in both arguments also fails to consider that without X that supposedly isn't preventing Y, we'd actually have a lot more Y. Without the devices, even more cars might be stolen. Without the library, even more books might be bought.
Skill tested: Parallel Flaw · how this choice captures the argument's function is the move to repeat next time.