That would be an exclamation mark.
Interjections express emotion....eww ! , yuck !, wow !, good grief !
The answer is D. He based the stories he told on other tales and legends of ancient Greece.
Homer wrote about existing myths and legends, and in a different time from Socrates. C is something we don't really know and A is wrong since these mythologies existed before him.
Show me more info....on Mr Lacey and his trip at the pound where he saw dogs I presume