The goal of the g21 plan was to bring a vehicle to market that represented a great value and had great environmental benefits. the prius was a result of this plan, a hybrid vehicle with a gasoline engine and electric motor combination. the prius is an example of

The answer to the blank space is green marketing.

The Prius is supposed to be marketed for its great value and environmental benefits – thus making the type of marketing the company is doing a green marketing. A green marketing is defined as the process of marketing a product or service based on their environmental benefits – it could be because the product itself is environmentally-friendly (such as the Prius, which is a hybrid electric-gasoline car, which means that it won’t emit as much pollution) or because it is produced in an environmental-friendly way.