Shells evolved from ribs. ... Turtles and other shelled creatures use shells like shields to protect themselves from predators, or animals that hunt them. Turtles probably needed a shield on their backs and stomachs because they faced predators in the ocean from both above and below.
Answer:
I'd say football.
Hope this helps ^-^* Sorry if I'm wrong.
Explanation:
Part A:
D, It suggests that the speaker is unhappy or troubled.
Part B:
A, He cannot sleep and needs to get out of the house.
