Answer:
Neil Armstring was an American astronaut and he is the first person to walk on the moon
This is a fragment. There is no subject required for a sentence.
Explanation:
There was once a poor boy who had no family. His mother left him when he was young and he never knew his dad. he barely had mony for food. He'd work his butt off day by day, and only have one token for bread each day. One fine evening he got a little too hooked up in a pirates business. The pirate didn't like him, so he took him off to an island. The pirate planned to kill him, but the boy was not afraid to die. The pirate could see he was in bad shape, so he decided to raise the boy. The boy was fed well and loved by this pirate whom he began to call dad.
The simple predicate of the sentence "Most nurses work in hospitals" is 'work'
C because it sounds more formal and like you know what you are talking about !