Final answer:
a) Beatrix Potter is the author of the story about the four little rabbits, which is a prominent work in children’s literature.
Step-by-step explanation:
The story of the 4 little rabbits named Flopsy, Mopsy, Cottontail, and Peter was written by a) Beatrix Potter. This story is found in Potter's famous work, The Tale of Peter Rabbit, which is a classic in children's literature.
The story was initially written in a letter to a boy, which was later published and has since become one of the most beloved children's books of all time.