The Question and Answer section for Frankenstein is a great resource to ask questions, find answers, and discuss the novel.
I don't know what you are meaning by part A.
From the text:
I admired virtue and good feelings and loved the gentle manners and amiable qualities of my cottagers, but I was shut out from intercourse with them, except through means which I obtained by stealth, when I was unseen and unknown,...
D. Elizabeth is concerned that Frankenstein’s health is too fragile for marriage.