however, that doesn't mean that the airline actually doesn't have hubs. It does$-$it just doesn't call them that. Atlanta $($ATL$),$ Baltimore $($BWI$),$ Chicago $($MDW$),$ Denver $($DEN$),$ Oakland $($OAK$),$ and Phoenix $($PHX$)$ are the airline's major "connecting airports." If Southwest Airlines were to use a route optimization model to plan routes through these "hubs" so that they minimize miles flown $($thereby minimizing fuel cost$),$ what type of analytics would they be using?

Diagnostic Analytics

Predictive Analytics

Descriptive Analytics

Prescriptive Analytics