E made the most sense to me; 'decisions [...] need to be made quickly' and 'ideally [...] informed by an assessment of the value of each document' seem to be authorial voice saying they value speed and decisiveness. The last paragraph points out that the 'sheer volume' of modern records threaten both the speed and decisiveness of archivists, which in turn, threatens the durability of all works. so, it seems to follow that the author believes E) to be true. I think the evidence for A), perhaps being that the author doesn't bring up non-digital alternatives, or that they reject the reluctance of archivists to adapt to it with a call to action instead, just doesn't seem as intuitive as E.