Facing stiff competition in the e-reader market, Sumac Industries wants to protect its competitive advantage by increasing the perceived value of its reader. Sumac's best strategy to accomplish this would be to

Answer:Highlight celebrities who use Sumac e-readers.

Explanation:

According to the question, due to tough competition in market regarding the e-reading product, Sumac industries wants that they can have superior position in e-reader market than other e-reader business organizations. Thus, they want a secure position for their company.

A good strategy for maintaining their position can be done through putting spot-light on the celebrity users of Sumac e-reader. This will be highlighted among celebrity fans or followers and general customers. It will promote or inspire people to purchase Sumac e-reader more as celebrities are using their product.