请教语法题

erin_feng

(photograph)was revolutionized in 1851 (by the) introduction (of) the collodion process (for making) glass negatives
为什么答案是Ａ？

山衔落日

呵呵，偷懒用了google搜了一下“was revolutionized in 1851 ”

找到http://www.britannica.com/eb/article-252851

Photography was revolutionized in 1851 by the introduction of the wet collodion process for making glass negatives.

enjoylife517

就是名词意思上的差异。Photography有整体行业的意思。