literary analysis again

Literary Analysis: Philosophical Assumptions
Read this passage. Then, answer the question(s).

Graham Penfield is an American oddity. The 46-year-old bookstore owner has never set foot inside a shopping mall. Not once. Ever. Why? "Never wanted to," Penfield says unapologetically. When coaxed a little, he elaborates: "From what I hear and read about them, malls sound like noisy, crowded, artificial environments. Why would I want to visit one?" According to some mall regulars, that's precisely why they flock to shopping malls—to immerse themselves in the noise and crowds and faux-village-square atmosphere. For these folks, bigger is better, and it doesn't get any bigger than the new mall in Islington. It covers 78 acres and is seven times as large as Yankee Stadium. When I described this mall to Penfield, he blinked and looked at me as though I had lobsters crawling out of my ears. "Madness!" he declared. I confess that I nodded eagerly in agreement.
6.
Which of these statements best expresses a philosophical assumption made by the author of the selection?
A. People who avoid malls are strange.
B. The new mall in Islington is absurdly large.
C. Mall noises and crowds are exciting.
D. The larger the mall, the better it is.

i am totally stumped on this one, but i think it's a???