Because cataract surgery is a well-known procedure (and is also commonly executed), the general public <em>should</em> have trust in it.
however, because there are many unknowns for people getting the surgery (leading to uncertainty in a mass setting) and it is [typically] operated under anesthesia, people do not always reach this conclusion.
so, few people have certainty about cataract surgery today
The only one that makes any sense here is A. I had to read this in the sixth grade, and understood that the author implies that Zaroff is without a conscience.
