D because at the time, the war was over with haha
Answer:
To distinguish consumers by their reserve price.
Answer:
3.Increase both global temperature and greenhouse gases
<u>LIKE</u><u> AND</u><u> MARK</u><u> AS</u><u> </u><u>BRAINIEST.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u><u>.</u>
1) You choose which college to go to: each college you don't choose is an opportunity cost
2) you choose which language to learn. You can't learn them all. If you decide to learn Chinese, you might be missing out on Spanish
3)Where do you want to do your exchange? if You choose one place, you're missing out all the other opportunities.
