TOEFL Listening: ETS-TOEFL听力机经 - 6N9353BRN5KX9VZ3P$

According to the woman, what factor determines whether a honeybee does a round dance or the more complex waggle dance? A. The type of food it found B. The richness of a food source it found C. The relative distance of a food source from the hive D. The number of bees observing the dance