I'm not entirely sure but I think it would be order of importance.
I think it's...
1) the cave was dark and gloomy.
2) The cave was spooky and narrow.
3) Jack could hear a spooky noise in the cave.
4) Jack could see a black bat in the cave.
( hopefully this is correct, sorry if by chance my answer is incorrect)
Can you please include the excerpt
There are 3 lines in a Tercet.
