Mrs.Bennet is a character and a static one at that, she goes back and forth between liking Mr. Bingley and being over the moon about the appearance of him which just goes to show how absurd she is about the whole thing. "<span>At our time of life it is not so pleasant, I can tell you, to be making new acquaintances every day; but for your sakes, we would do anything." I would think this part of the passage suits the issue quite nicely as she gushes on about how they would do anything to get their daughters married even at their age.</span>
B. Is correct, father and principal are not proper nouns so they shouldn't be capitalized
I would have to go with one or two but pearsonaly id go with two
A teacher is the most sensible one. because in doing so the problem is reviewed by a higher source, therfore the outcome of that vs any ohter is the most satisfiyng