Brandon is a member of a group that plans on planting 10,000 trees throughout their city within a year. since brandon is an environmentalist, he feels a deep sense of satisfaction while planning the locations for planting trees, organizing events for raising the necessary funds, and the group gather support from the other people in the city. he feels that he will be able to make a tremendous contribution to the environment by being a member of the group. which of the following types of incentives most likely motivated brandon to join the group? a. a material incentiveb. a purposive incentivec. a solidary incentived. a monetary incentivee. a tangible incentive