Answer: d) generic
Explanation:
Generic competition is defined as the competition that occurs between the products that serve the same purpose by providing benefit or solving the issue even though they have differences between them.Ex- tape and glue ,both are used for sticking things but are different from each other.
Other options are incorrect because product competition, budget competition,brand competition or regular competition are not the competition situation where different products are used for proving same solution.Thus, the correct option is option(d).