Vital could mean something that is important or essential.
For example: the lungs and heart are both vital organs in the human body.
The answer is personal and spiritual exploration because romantic literature was meant to make the mind wander into romantic stories of love and romance where one found out more about themselves while falling in love. At least, that is my best guess since it's certainly not supposed to be rational and well reasoned ideas, it's not about religion, and I don't think it's supposed to empasise on society.
Answer:
what's the question if your trying to just summarize that seems correct
The correct answer is D. simple.
A simple sentence contains only one independent clause. If a sentence has more than one independent clauses, then it's called a compound sentence. If it has one independent clause, as well as one (or more) dependent clauses, then it is a complex sentence. A run-on sentence is a grammatically incorrect sentence which combines two or more independent clauses with a comma only, rather than with a conjunction.