It’s considered ironic that he praises the castle atmosphere because the atmospheres is in actuality quite tense seeing as the Lord and Lady Macbeth are in disagreement about what to do with him. It’s also ironic because the Lady is hospitable but only in order to lower his guard so that she can kill him.
One opinion says that hunting was invented by the people who lived
back at the beginning of people. I think it goes back even farther than
that.
Every living thing that can move around goes hunting for things to eat,
and there were a huge number of living things that could move around,
long before people came along. Like dinosaurs, bats, cockroaches etc.
So I don't think you can say that hunting was ever invented. It was just
something that living things just naturally always did, like breathing.
B
because A is a simile
c and d don't really fit, plus I know for a fact is it b.