In the Pepperburg study, what was the result of familiar object trials?

In the Pepperberg study, the result of familiar object trials indicated that animals, particularly African grey parrots, showed remarkable understanding and cognitive abilities concerning previously known objects. The correct answer reflects that the parrots were able to demonstrate a significant level of comprehension and learning by achieving 69 correct responses out of 99 trials with objects they were familiar with.

This performance is noteworthy as it showcases the parrots’ ability to recognize and communicate their knowledge of the familiar objects, which strengthens the study's findings on the cognitive skills of non-human animals. The number of correct responses signifies their ability not only to recognize but also to respond correctly to the questions posed about these objects, thereby providing insights into their intelligence and understanding of language.

The other choices present figures that do not accurately represent the results of the familiar object trials in the study, which solidifies the importance of the selected answer as part of understanding animal cognition and communication.