The question is asking to choose among the following choices that states the connection between a synopsis and a story and base on my further research, I would say that the answer would be that the synopsis is a brief summary of events of the story. I hope you are satisfied with my answer and feel free to ask for more
Because hardly any one had actually been in his house before and he wanted to be nice about it
The second on is a comma splice because it’s linking to dependent clauses