Mental picture we have of something.
The belief that slavery is a morally offensive practice represents MORE kind of social norm.
I’m not understanding the question exactly
Answer: give them more options for extracurricular activities, let them go out, have them walk to school, etc. it’s not hard to keep our young people healthy :)
Explanation:
The subordinate clause is "When the delivery man arrives" because 1. it is introduced by "when" and 2. we can ask question to the main clause about this one.