Japan is a culture of accommodation and constraint, a system of forms, etiquette, and images, making its ever-present congestion tolerable.

(A) Japan is a culture of accommodation and constraint, a system of forms, etiquette, and images, making its
(B) Japan, a culture of accommodation and constraint, is a system of forms, etiquette, and images, which makes its
(C) A culture of accommodation and constraint, Japan is a system of forms, etiquette, and images making its
(D) Japan's is a culture of accommodation and constraint, a system of forms, etiquette, and images that makes the
(E) Japan's is a culture of accommodation and constraint, of a system of forms, etiquette, and images which makes the


OA is D

I would love an expert to express in style why A is correct, though D looks okay too.