Respuesta :
The opportunity cost is the camera, it was the next best thing. His trade-off was the video games. An opportunity cost is the next best thing in line. A trade-off is the option eliminated first, there can be many trade-offs but only 1 opportunity cost.
The opportunity cost was the camera, as it was the next best thing in his decision. The trade-off was the video games, as it was the first thing eliminated in his decision. There can be many trade-offs in a decision but only one opportunity cost, as trade-offs are everything eliminated and opportunity costs is the option that is not chosen out of the last two choices.
Hope this helps :)