The answer to your question is most adequately described with letter D. The theme is the mysteries of God, as this was his "preoccupation." This is implemented in his epic tradition in Europe.
10.) let go 11.) laid back
I believe is D.
Conservative means to protect traditional attitudes and values about change and innovation. And option D gives the option where they provide absolutely everyone equal rights which is part of change to create a tradition.
I could be wrong but this is what I believe to be the correct answer!
Vital could mean something that is important or essential.
For example: the lungs and heart are both vital organs in the human body.
