Answer:
I think the answer is all of the above but if it isn't I think it's
C. Determine whether or not they understood the central ideas
Explanation:
whats the sentence i cant answer it unless we have the sentence
1. Hold doors open
2. Eat all your meal to show gratefulness
3. Look at people when you spak
4. Sip drinks quietly
5. Chew with your mouth closed
6. Dont talk with your mouth full
7. Say please and thank you
8. Lend your property
9. Dont be violent
10. Dont be rude