As with any author's decision to use 1st person, her intention most likely -- in this story -- was to get her readers to go along for the ride into madness and cultivate a certain amount of sympathy for the narrator and her plight. The constant use of "I" puts readers in the narrator’s head and allows them to empathize with her.
I believe the answers to the sections of question 2 are:
A. "We" is who needs the umbrellas.
B. "Them" is the pronoun that replaces "umbrellas".
The insights that you can gain by studying psychology are the following:
Research - this helps the study become more productive in the needs of society, and at the same time discover various matters that involved it.
Perspective - with the study of behavioral science, you get to see a better perspective especially when encountering people.
Critical Thinking - it helps you gain more knowledge about your brain's activity, thus helping you develop more ideas in a better way.
Knowledge - in this world where people's minds have become the basis of society, you get to learn more about the world itself and how it develops.
Answer:
Hello (Soldiers name)!! My name is (First name or nickname). I would like to thank you for serving this country and tell you that you are doing a great job! Stay safe out there and keep up the great work!!
