C because a has 2 parts, b has because making dependent sentence, d is whatever it is (I forgot) but the answer is C
Look for a Friend
Sam is a little fish. He lives in the sea. He is very lonely. He wants to have a friend. The friend looks like him. Sam sees an ink fish. The ink fish has eight legs. He doesn't look like Sam. So Sam goes away. Sam meets a shark. He wants to say hello to the shark. The shark opens his big mouth. Sam runs away quickly. Sam is tired and hungry. He wants to have a rest. Then he sees a round fish. She says to him. "Hello! Would you like to be my friend?" Sam answers: "Of course! But you are round. I am flat." The round fish days: "But we are both fishes."
Sam thinks and says, "You are right. Let's be friends." They become good friends.
The tropics, underwater volcanic regions, the equator.
Answer:
Its informal style connects directly to the reader.
Explanation:
Just took this on a test and got it right.
Go back to the text and re-read a passage where Watson made a discovery. If Sherlock praises him, you've got your answer. I'm sorry if this wasn't much help, but I don't have any text to go off of.