Final answer:
Industries like flour milling, dairy products, and commercial fishing are most likely to have joint costs because they produce multiple products from a single input, which can benefit from economies of scale.
Step-by-step explanation:
The industries that would most likely have joint costs in production are flour milling, dairy products, and commercial fishing. Joint costs occur when the production process yields multiple products simultaneously.
These industries tend to have joint costs because they begin with a single raw input that can be transformed into a variety of products. For instance, milk in the dairy industry could be used to make cheese, butter, and yoghurt.
Wheat in flour milling can be processed into different types of flour, and in commercial fishing, the catch can lead to several types of fish and seafood products being processed.
The concept of economies of scale is related to this discussion as increasing the scale of production can lead to a reduction in average costs, proving beneficial for industries with joint costs. This can lead to more competitive prices and a wider variety of products for consumers.