I believe that the metaphors are used to describe the brother and sister. This is because it compares the persons personality to that of a different animal so B.
Hope this helps!
Symmetry is <span>the quality of being made up of exactly similar parts facing each other or around an axis.</span>
The Parting of Lot and Abraham is about their literal parting - Abraham took his family to Canaan, as God wanted him to, whereas Lot went to Sodom, and defied God's wishes. Now, having this in mind, maybe this mosaic does symbolize B. heaven, as Abraham and his family would go to heaven eventually, because they obeyed God's orders and wishes.
