The correct answer is D. experience curve.
An experience curve is a concept used to define learning curve in broader application. It is a graph that shows the relationship between the cost of producing a product and the cumulative number of units produced. The experience curve shows that the cost of producing a product decreases as the cumulative number of units produced increases. This is because as more units are produced, companies learn how to produce them more efficiently.
The experience curve is a powerful tool for businesses because it can help them to reduce costs and improve profitability. By understanding the experience curve, businesses can make better decisions about how to produce their products.
The other options are incorrect because they do not accurately describe the concept of an experience curve.
A discrete curve is a type of curve that has distinct points. This is not the case with an experience curve, which is a smooth curve.
A fixed curve is a type of curve that does not change. This is also not the case with an experience curve, which changes as the cumulative number of units produced increases.
A mixed curve is a type of curve that is a combination of two or more other types of curves. This is not the case with an experience curve, which is a unique type of curve.