Final answer:
Gunther is using the 21st century skill of innovation by adding caramel dipping sauce and a display to make the brand more appealing and increase sales.
Step-by-step explanation:
The 21st century skill that Gunther is using in this scenario is innovation.
By adding containers of caramel dipping sauce and a display next to the apples, Gunther is trying a new approach to make the brand more appealing and increase sales.
This shows his willingness to experiment with different ideas and think creatively to solve a business problem.