Question

Select the items that describe voluntary exchanges.

Answer 1

I believe the answer is:
- trading money for a car
- bartering baseball cards 

Voluntary exchange refers to the voluntary agreement between two parties where they can trade one possession with the other.
To be considered as 'voluntary', neither parties involved should be forced in anyway and both of them should be satisfied with the value of possession that they give and take.

Answer 2

Here are the answers to the given question above. The items that describe voluntary exchanges would be: trading money for a car and bartering baseball cards. When we say voluntary exchanges, this means that it is not forcefully done and undergone agreement. Hope this is the answer that you are looking for.