It's subjunctive, I've looked up the meaning of each word.
Answer:
<u>Mountains </u>is a common noun.
Explanation:
Proper noun will specify the mountain- like if it was Mt. Everest then it would be a proper noun.
Answer: They should be treated with proper care. it is also abided by the law for that person to be encouraged and motivated.
Explanation my uncle had a serious mental illness.
Answer:
Please attach the pic :))