I’m pretty sure the answer is A or c
I hope this helps narrow down choices
Tailings
Slurry is a liquid concrete or cement
Impoundments are enclosures of water
I think it's either the Forest or grassland though it might be Forest, just saying
If Gabriel developed diarrhea as a result of taking an antacid, he's been taking an antacid that contains magnesium.
Magnesium will act as a laxative.