What is the main action a writer takes when proofreading

From the glass menagerie: "suspended in the mist over berchtesgaden, caught in the folds of chamberlain's umbrella." who was chamberlain? a.paul chamberlain: tom's father b.neville chamberlain: prime minister of great britain. c.pedro chamberlain: amanda's drunkard husband d.cornelius chamberlain: gentleman caller for laura

I’ve given a lot of thought to what one of them should be, and the answer seems clear.

Which section of the passage illustrates mrs. dalloway's feelings of emptiness caused by her social identity