The speaker had an unpleasant experience of America and had a negative first impression. This feeling stayed with the speaker even after the event.
1) b and a - A sparse crowd is one that is small and scattered.
2) c and b - To petrify someone is to terrify that person.
3) a and b - An intense pain is one that lasts for a long time.
4) a and b - A prone figure is one that is lying face down.
I was just okay i’m okay but it wasn’t really
It just means that you need to write down how your journey with music has made you feel and what it means to you. For the wider social group part it means that have you met new people or connected with other people by liking the same kind of music. And then take that and connect it to your favorite musician or song.