The answer is sentence fragment
Answer: it sounds like the lower animal is at lower risk of getting eaten. Which is why roosters are a higher animal then humans.
C. a proposal from a local radio station detailing a popular ad
Because those holding the bake sale would know how much they are charging sponsors for sponsorships and would also know the number of people who would come into contact with the sponsor information, the information that would be needed is the same information for a radio ad campaign in order to make the comparison. As such a proposal from a local radio station detailing a popular ad plan would be just the source needed.