According to the arguments in chapter $4,$ which of the following would work BEST for the following scenario: As a manager at the French discount retailer Carrefour, the best way to derive a competitive advantage is

increasing Carrefour's superiority over rifolls by executing even unimportant tasks and activities extremely well.

building value$-$creating activities in areas where rivals have a competitive advantage building organizational expertise in performing Carrefour's competitively important value chain activities, particularly in areas where the company is already strong.

Strengthening all weak areas in the value chain