The answer is the same for all questions. The source is the same Apostolic Tradition that produced the bible you claim holds everything except the answers to the dogmatic inconsistencies of Protestantism posed by those questions.
lol. "Apostolic tradition" (however Rome decides to redefine that term today) did not "produce the Bible."
The Bible reiterates the teaching of Jesus Christ as learned and taught by the apostles with words and sentences in black and white.
Not amorphous, changeable "tradition."