Answer: uses a behavior pattern classification for costs rather than a functional cost classification approach.
Step-by-step explanation:
The behavioral pattern of a cost refers to its relationship with the volume of production or sales. Costs that change along with the volume of production or sales are termed "variable costs" and costs that do not change are termed "fixed costs".
The Contribution Margin income statement classifies costs by whether they are variable or fixed which is why it is said that the format uses a behavioral for cost classification pattern not a functional one.