For 11, and 12. Please please please I’m begging you please

Answer: I think for 12 the second one ssia has more elders
Explanation: I one is wrong since if there where a ton of kids wouldnt they eventually get married and have children? Number 3 is wrong since if there are married ppl they would have children. The last is wrong also since Asia did not say ppl arent allowed to have children.
Answer:
11) Systems where goods and services are bought and sold
12) I think the last one sorry if it's not correct