"We Can Remember it for You Wholesale," seems to imply the following about knowledge?

This is a tough question!!! I would say that c. comes closest to reflecting some of what is being presented or explored in the novelette. Definitely it is saying that knowledge is "fallible": the false memories are billed as being much superior to the person's real memories - more complete, more stable and more detailed and vivid. Real memories (hence the knowledge ociated with or derived from them) are often hazy and full of inconsistencies. BUT, they, and the ociated knowledge, are at least real, even though 100% certainty is not present. So, we see that although knowledge is fallible, it nevertheless does not require 100% certainty.