1. I believe the correct answer is B. The stream of consciousness technique.
This excerpt is an example of Woolf's use of the stream of consciousness technique as an experimental narrative form. This technique allowed her to present inner though process of multiple characters throughout the text (in this excerpt the thoughts of Septimus).
2. I believe the correct answer is C. intense anxiety and fear.
From a description of the scene, we are transported into the mind of the harrowed war soldier, Septimus. The words such as wavered, quivered, burst, and throb, give us a sense of his intense anxiety and fear.
3. I believe the correct answer is: C. "Things fall apart; the centre cannot hold."
The description of the scene is reminiscent of the following line from a poem “The Second coming” by William Butler Yeats is "Things fall apart; the center cannot hold." Septimus believes that he is the one stopping the world from bursting to flames:” It is I who am blocking the way, he thought. Was he not being looked at and pointed at; was he not weighted there, rooted to the pavement, for a purpose?”