Answer:
D. A bird flying from its nest.
Explanation:
This is a transition from not flying, to flying which I would consider is transitional.
Answer:(a)used to do.
(B)used to not eat.
(C)used to travel.
(D)used to not have.
(E)used to take.
(F)when your grandmother used to read.
(G)used to wear
Explanation:
I think it's B or A
I'll update this when I know for sure