A, as the rock in flowing water, she is sturdy and perseverant.
Yes sir it definitely always is
The first word in quotations does NOT always need to be capitalized. If you are quoting what someone said, it should be capitalized, and so should the title of a book, movie, song, etc., and if the first word in quotations is the first word of a sentence. If you are just quoting a small part of a phrase/song/something that has already been written by someone else, it does not have to be capitalized.