C. The rest are letters to people in familiar situations.
My answer is not 100% correct, take what you think will help you :) I hope this helps
It is important as she needs to learn how to react to important situations. Having a good impression towards people will later on bring many benefits to her.
Helen Keller's father didn't discipline his child, and now his child. She is also deaf and blind which makes things more challenging for her to learn so this gives Helen more motivation to teach her.
Answer:
I believe that the difference is that space is like when you have a desk and there is still enough volume to place something inside and outer space is the universe (outside the Earth's atmosphere , that is the area where there are stars planets etc...)