Which of the following best describes the help offered by chimpanzees in the Yamamoto study?

The help offered by chimpanzees in the Yamamoto study is best described as dependent on a direct request because the research specifically focused on the chimps’ ability to assist each other when a clear request for help was made. The study demonstrated that chimpanzees were more likely to offer help in response to cries for assistance or when a specific need was communicated. This highlights the significance of social cues and the understanding of another's needs among chimpanzees, showing their capacity for cooperative behavior. The results indicate that the chimps were not arbitrary or random in their assistance, nor did they act solely based on individual motivations detached from the requests of others.