D. Mom should be capitalized because I believe it is a proper noun.
You can replace the word mom with a person's name. That is not always the case however. For example, I called my mom on my.... If you capitalized mom in this sentence and put a name then it wouldn't make sense because the word my was added. Hopefully this helps and makes sense. Good luck!!!
A group of similar things or people positioned or occurring closely together
Answer:
Im Very Sorry!
Explanation:
Consider Re-Asking the question and ill try my best to help!
Answer:
I think this school is on a mountain, with no shelter and where. the air is the freshest.
I think the students are learning from a teacher standing at a corner.
