Post a photo that illustrates the principles of opportunity cost and comparative advantage in action in real life. (It would be great if the photo is from your own life, but ok to use one from the web - with any necessary permissions - if you prefer not to share personal details.)

Marking criteria

Your answer will be marked according to the following categories.

• The photo is clear and illustrates the two principles (given any added context).
• The explanation demonstrates an understanding of the principle of opportunity cost.
• The explanation demonstrates an understanding of the principle of comparative advantage.
• The overall exposition is clear and sufficiently detailed to effectively communicate the main ideas. (Note that an answer does not have to be "long" to be "clear" and "sufficiently detailed".)