Ahigh school has started a community service program. under the program, students must participate in volunteer activities, such as at an after-school program, visiting residents at a nursing home, and planting trees. the students who log the most service hours will receive a special designation on their diploma. what incentive did the school offer the students in this case? a. a reduction in tuition b. the satisfaction of others c. recognition at graduation d. the satisfaction of improving the environment