Examine the table the production possibilities for tractors and crude oil. the table shows the maximum amount of tractors and crude oil that each country can produce when they devote all of their resources to the production of that good. the opportunity cost in mexico of producing 40 tractors is (thousand) barrels of crude oil.

The opportunity cost in Mexico of producing 40 tractor is 120,000 barrels of crude oil.
The opportunity cost refers to the alternative that has to be given up in order to enjoy another option. In the table given in this question, the opportunity cost of Mexico producing 40 tractors is the 120,000 barrel of crude oil, which it has to forego.

In the 10th grade, i was teamed up in a group of four. our project was on modern history. altho it seemed super hard for many of us. patrick fleming  took charge and showed us the understanding of this project.  his leadership showed great ethics and it taught me, personally, how to others understand, not just to show them, but explain it thoroughly. and altho he was a great teacher i would have changed a few things. one being his attitude. many times he would get frustrated and impatient with the group.  i think  a leader i would have done exactly  what he did but with much more patience and be there more to explain. such as lunch  learning. and giving everybody a chance to try to explain it in their  head.