Explanation

Reading the question: we get a plan, and we have to choose what will most weaken the idea that the plan will work.

Creating a filter: the correct answer is likely not just to undermine the conclusion, but the logic of the argument. That involves quality, the new player and format, and large screens. The argument says that the new player and format are worth it because of the quality benefit on the large screens. The best weakener of this argument as a whole is likely to weaken that specific connection. We look for such a format-quality-screen weakener in the answer choices.

Applying the filter: (A) doesn't mention anything we're looking for. (B) doesn't, because "quality" is about sound quality. So (A) and (B) are out. (C) doesn't pertain to the connection we're interested in. Moreover, we're not expected to believe that there is a low cost to installation, but rather that the installation will be worth the cost, and maybe recouping in several months is not so bad. (D) is better; if movies aren't available in the new format, then improved visual quality might not merit switching to the new format. (D) is objectively superior because it alone undermines the logical connection in the argument between improved visual quality and being worth the switch. It does it somewhat indirectly, but since it hampers the conditions under which the switch can be adopted. (E) is not necessarily a problem for the argument. The correct answer is (D).