Elaine: The purpose of art museums is to preserve artworks and make them available to the public. Museums, therefore, should seek to acquire and display the best examples of artworks from each artistic period and genre, even if some of these works are not recognized by experts as masterpieces.
Frederick: Art museums ought to devote their limited resources to acquiring the works of recognized masters in order to ensure the preservation of the greatest artworks.
E's conclusion: Preserve examples from each genre and time period, even non masterpieces
F's conclusion: Only display recognized masters' artwork
OK, simply put, we have a disagreement about what the museum should preserve.
Elaine’s and Frederick’s statements provide the most support for the claim that they would disagree about whether
(A) many artistic masterpieces are not recognized as such by art experts --
Neither argue for/against an expert's definition of a masterpiece. In fact, E clearly says she doesn't care if they are masterpieces, so this out. (B) museums should seek to represent all genres of art in their collections --
E says yes, whereas F says no. F says only masterpieces. This is exactly what we talked about above. Perfect. (C) art museums should seek to preserve works of art --
They both agree with this. Once more, it is a matter of WHAT each wants to preserve. Out. (D) an art museum ought to acquire an unusual example of a period or genre if more characteristic examples are prohibitively expensive --
We are never told anything about price as a requirement or characteristic from either view point, so this is out. Neither cares about price, but F does care about the apparently limited resources (but not about price. Remember, F says masterpieces, which are probably not cheap).(E) all of the artworks that experts identify as masterpieces are actually masterpieces --
Similar to (A). We do not care about the definition used by experts because we are not seeing an argument about definitions. We are seeing an argument about what we want to see/collect.