All of these but the nosebleeds seem correct, but something much stronger like cocaine can cause nosebleeds.
But if you want just ONE answer 'impaired memory and learning' seems like the best one to pick because that is one of the most noticeable signs of marijuana use.
This website talks about the symptoms of use, I trust its accuracy:
https://www.webmd.com/mental-health/addiction/marijuana-use-and-its-effects#1
Setting a balance of how much you would be eating would be a way that you could prevent a disorder of eating. Setting limits to how much you would be eating, and also, with this in mind, having some stand, and self control would also be a way to prevent eating disorder.
The answer is answer choice A
C. the safety of those involved in conflicts
