Answer:
A) Design competition
Step-by-step explanation:
Digital watch manufacturers and manufacturers of analog watches compete against each other because their products basically satisfy the same needs. Each one offers a very different product with its pros and cons, but even though their products are so different, they can be considered substitutes.
In the concept of innovation streams, Curtab is the innovator that is trying to create a sustainable competitive advantage because it works by designing an innovative product while its competitors rely on updating old designs.