Thanks for the question! So let’s take a look at what the stimulus is telling us. We’re told that in addition to physical exams, modern physicians will use lab tests to diagnose diseases accurately. And so the argument then concludes that when insurance company regulations deny coverage for some laboratory tests, the quality of medical care patients get goes down.
Now we’re asked for an assumption that would justify the conclusion; in other words, this is a strengthen with sufficient premise question. Let’s take a look at (E), which tells us that lab tests are more costly to perform than physical exams. Assuming this is true, does this help us get to our conclusion, that quality of medical care goes down when insurance company regulations deny coverage for laboratory tests? No, it doesn’t. It just talks about the relative costs, but that doesn’t tell us anything about the quality of care patients end up getting, and that’s why (E) is wrong.
Hope this helps! Feel free to ask any other questions that you might have.
