Answer:
B. Outcompeting rivals on the basis of such differentiating features as higher quality, wider product selection, added performance, better service, more attractive styling, technological superiority, or unusually good value for the money
Explanation:
The correct statement above describes a strategy that focuses on many areas at the same time with the goal of increasing competitiveness across the firm.
Because the firm becomes competitive in many areas such as quality, amount of products offered, technology, and marketing, it is harder for competitors to outperform it in all of those aspects at the same time.
Even if the firm loses its grip in one area, it still remains competitive in other areas, and that is the very definition of a sustainable competitive advantage.