by Gerald Mon Dec 03, 2012 5:59 pm
Here's my explanation based on the posted passage discussion.
12. D
Question Type: Infererence (16-18, 31-33)
This question asks us to infer from the passage, and we will look to two different places for our inference. (D) says that recent media used to store information electronically may prove less durable than older, conventional media. Lines 16-18 mention that black and white photos can last centuries, color photos tap out at 40 years, and videotapes last about 20 years. Meanwhile, lines 31-33 reveal that recent generations of digital storage tape will deteriorate after 10 years. 10 is less than 20, 40, and 200. Therefore, (D) is inferable.
(A) Theft? Out of scope.
(B) Optical disks are mentioned, but whether their data was transferred to storage tape is not. Out of scope.
(C) High costs? Never mentioned. Out of scope.
(E) Percentage of information considered essential? Never mentioned. Out of scope.