Exploratory research for Capitol Brewing seems to indicate that sales for dark lager are down for all breweries. This is an example of which kind of problem

Answer: Industry problem

Explanation:

Industrial problems are the issues or situation experienced by organization and industries that disrupt or damage their function, production, manufacturing etc. Shortage of skilled labors, degradation of production, decrease in customer demand, manufacturing troubles etc. are some industrial problem.

According to the question, as the sales of dark lager is falling for all the brewing companies which is indicating about the issue faced by beer-manufacturing companies as per exploratory research.