I’m in my 40’s. Take the time you need to be prepared.

That is fantastic!

Also a Veteran, and even less traditional -- taking the LSAT at 45y/o after retiring from AD.

Where do you get "doubtful value" regarding X-rays? In fact the opposite is both true and directly supported by the passage. "...a brain scan is similar in principle to an X-ray: it is a way of seeing inside the body. Its value is straightforward and indubitable. Alternatively, AC E is the only other logical choice.

I answered A for the obvious reason. However, additional research reveals that in actuality rattlesnakes molt 3-4 / year, but at the same time, molting in rattlesnakes is inconsistent and has more to do with age than food availability.

Regarding "imposter syndrome": Borrowing from a concept in (Army) selection processes, do not self-select. You do your best to prepare, and stick through to the end. In other words, if you quit on yourself - you guarantee a negative outcome. Whereas if you prepare and show up, the odds of success go up dramatically.