Hey emsr, you have corrected the essay very well.
Dlwn, I'd like to comment on the organization of text. There are certain exams that also test how well you can support your stance in English if it's an English test like
IELTS. You have explained all the three though not in different body paragraphs.
You could explain the three options- enhance Knowledge, social awareness and interpersonal relations in a single para. Pick up one of these or take a new reason and explain it in detail in the next body para.
Alternatively, describe these three points in three separate body paragraphs with each para based on just one main point.
I hope you are getting what I am pointing at. I teach on a website called wiziq.com where in my
IELTS classes or the
IELTS Online Practice test, I show how to make these paragraphs on separate themes.
Best of Luck!