If this is a true/false question, I'd say true
I guess it is important that your subject lines be worded correctly so as to avoid any confusion or misunderstanding. You want your audience (be that readers or listeners) to understand you correctly, and if you fail to word your ideas correctly, they won't be able to comprehend what it is you are trying to tell them.
the conflict is very important because it develops the story
The second sentence is correct
The comma should come after the word bus.
If you say the sentences out Loud it would be easier to determine which ones make sense.