Answer:
A. KSFs are often necessary, but not sufficient for competitive advantage.
Explanation:
KSF
Key Success Factors (KSFs) represent business functions, practices or business activities as defined or seen by the customers or the market as being important or crucial to the development of consumer/business relationship.
KSFs represent areas organisations are to attend to based on the views of the market in order to achieve their goals. It could be in form strengths to maximize, weaknesses to address, aspects to take advantage of among others.
It becomes obvious that although important (from the view of the market or consumers who patronize the business), a business must makes its own due diligence in form of SWOT analysis among others to have the required competitive advantage.