Barter system- A method of exchange when no money is involved.
B and C can't be the answers because they are not exchanging anything.
D can't be the answer either because there is money involved.
So your answer is A) You trade an apple for a banana at school. because you are exchanging something with someone for something else thats not money.
Hope this Helps!!
Answer:
I would ask Abigail Williams what it was like in salem. She was one of the most notorious women acussed of witch craft.
1. what was the day before being acussed like?
2. where you really a witch?
3. were you scared?
4. what did your family do?
Explanation:
I would just ask those questions
The answer would be B , oil in Southwest Asia has created an unequal distribution of wealth ( some countries more than the others ) .