Answer:
The correct answer is letter "C": brand.
Step-by-step explanation:
Brand competition takes place when two or more brands offer a similar product or service to the same target market and audience attempting to obtain higher revenues and market share. Brand competitors could be companies that have fought side by side over the years -Coca Cola vs Pepsi, for instance- or some that have few years in the market -Gatorade vs Powerade, for example.
As new products are introduced, brand competitors will continue to appear.