Which is a complete sentence?
a. many types of formations in carlsbad caverns.
b. turn down the last street to reach the beach.
c. the sunset, behind graying storm clouds.
d. guest rooms at the hotel del coronado.

(B) Turn down the last street to reach the beach

This is a complete sentence, because it has an independent clause which can stand alone on its own.

Dogs have been considered man’s best friend for decades! most likely because of their kind and loyal nature. they make splendid companions. their loyalty is beyond compare and after all, a dog is the only thing on earth that loves you more than he loves himself! dogs see us as their friends and leaders, they’ll do anything in their power to ensure your comfort and safety.