It's like a theme or assesment. Such as poetry. You might study it for a while, and then move on to another subject. Example: I studied poetry for 3 weeks, then I moved on to...... blah blah blah. Get it?
The answer to this question is both
Answer:
is this a comprehensive question? if it is, I recommend you to check the passage. If it is not, option D could be selected.
The word brat is a emotional connotation because it’s a mean word