Formal is like writing to professors. like this, The other day I was with a couple of friends at a cinema. After watching the film the Manager came towards us.... ect ect
I believe it's between A and C. But, I'm going with C!
Many dark romantic themes are reflected in this excerpt. Most notably mystical presence, the overwhelming power of nature, dread and discomfort, etc.
It means to be embarrassed in a social event or situation.