Answer:
A hypothesis is an educated guess, or a guess you make based on information you already know.
Explanation:
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)