Bill is the biological son of ed and marilyn, who divorced when bill was three years old. for two years, bill and marilyn lived alone. then, when bill was five, bill and marilyn moved in to jeff's home with jeff and his three children when jeff and marilyn got married. in order, bill's family type changed from

Bill’s family type changed from natural to single parent to blended.

-          It was first a natural type of family as they are living in a normal and simple way with their family complete and then it turned to single parent as Bill’s parent divorced, having him to live with his mother. It turned into a blended type as they move on Jeff’s home where Bill isn’t even related to Jeff.

i got 3,4 and 5 as an answer