Southwest Airlines is a major American airline and the world's largest low-cost carrier. Instead of following the typical "hub and spoke system," Southwest does not have a hub airport and prefers instead connecting cities directly. Additionally, Southwest only uses one type of airplane, the Boeing 737. Because of these two major factors, Southwest gains efficiency allowing for better profitability. This is an example of (a) _______________. Group of answer choices Managing Firm Resources Efficiency Probe Organizational Culture Sustainable Future