The list you look for is a). The verb 'to go' is an irregular verb because it completely changes its form in the past: went - gone.
Answer:
it might be the first one I'm pretty sure it is.
Answer:
uh I think it's like Google assistant or something
The mood is unsettling and suspenseful. The words "unfamiliar, concerned, unusually, and heavy" help set the mood to this.
