Umm that’s hard to awnser
A complex sentence contains one independent clause and at least one dependent clause. Here, in your example, there are two simple independent clauses which you need to merge using a dependent adjectival clause in order to make one complex sentence. Here is how to do it:
The boy <u>who wore a green coat</u><u /> carried his sister home.
You did not type the choices therfore i cannot help you
D because these are good topics for a personal. I'll list them for you
Experience. The objective of the narrative essay is to teach you how to tell about your experiences in a literary manner. ...
Childhood. Childhood is a period of bright impressions and first experiences. ...
School years. ...
Relationships. ...
Morality. ...
Interests. ...
Traveling. ...
Student life.