An example of perfect competition is the automobile industry

________ are increasingly popular because they can be both informative and entertaining, and often the cost of airing of a 30-minute block of television time is reasonable.

Fill in the blank(s) with correct word.

Marissa Hopkins, a hospital nurse, notices that the gurneys used in the hospital are not durable enough. She informed the hospital authorities about Grace Care Inc, a new company selling lightweight and durable gurneys

In this instance, Marissa played the role of a(n) ________. A) strategist B) buyer C) gatekeeper D) influencer E) decider