Answer:
Opportunity cost is the comparison of one economic choice to the next best choice. Or the choice not been made.
EX:
You choose Coke over Fanta. The opportunity cost is the Fanta because you didn't choose it
Carol HAS a piano lesson tomorrow. ( cause have does not make sense)
hope this helps! :)
Se dice " computer" en ingles.
But where is the picture, I really want to help you.
Well this is more your opinion so I can't realy answer for you but I would agree strongly crimes comte by children under 18 are getting worse and more frequent.