Answer:
Option D (linear) is the right approach.
Explanation:
- The scatter graph seems to be a graphic method to determine the relationship regarding expense and degree of operation. It could be used to evaluate the expense behavior of adjusting this same degree of operation.
- It is being used to verify the system suitability or linearity statement that is true.
Some other decisions taken are not relevant to the situation in question. Although it is indeed the best option.
