Which word group is a complete sentence?
a. peering across the bay at east egg, Gatsby caught sight of green light at the end of dock at Daisy's house.
b. walking along the beach wearing my flip-flops, floppy hat, and new Ray-Ban sunglasses.
c. if you can keep your head with all about you are losing theirs and blaming it on you.
d. wandering lonely as a cloud that floats on high o'er vales and hills.