The correct answer is “Cost”.
A healthy lunch that is $0.75 more than the current lunch has a higher economic cost.
The economic cost has the advantage of an opportunity cost. It means that although a thing is more expensive, it has an opportunity cost, which means that there are benefits included in the price you are paying. In this case, a healthy lunch that is $0.75 more than the current lunch has a higher economic cost, and an opportunity cost. Hope this helps!