I want to say C, Horizontal.
Is impossible. Problems with vision cannot be cured through mental stamina, and reside in the eye itself.
Phychosis causes delusions or hallucinations.
Heath care workers often have to watch their patients die which can be extremely difficult for anyone. additionally, they might have to work long hours which makes it hard to maintain a social life or spend time with family. they are also on their feet a lot which can cause back pain or even stress fractures.
hope this helped:)
brainliest?