Final answer:
Recognition in the campus newspaper would be a 'social reinforcer' incentive for a school health promotion program.
Step-by-step explanation:
A social reinforcer is an incentive that involves social recognition or approval. Based on the provided options, the most appropriate 'social reinforcer' incentive for a school health promotion program would be B. recognition in the campus newspaper.
Recognition in the campus newspaper would give students social acknowledgement for their efforts in promoting health. This form of incentive encourages positive behavior and can motivate other students to engage in the health promotion program as well.