What is the best course of action to follow should you lose your train of thought during your speech?

This passage from chapter 4 of story of my life is an example of which story of plot

Which choice is a major detail from paragraph two? a) the great wall is a large network of several walls and towers. b) the great wall looks like a long wall snaking its way across china. c) the great wall was constructed over hundreds of years beginning in 221 b.c. d) the great wall construction encouraged several independent kingdoms to unite.

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