Final answer:
Chimpanzees utilize tools such as twigs and stones to solve problems and gather food, providing significant insight into the cognitive abilities of primates and evolutionary parallels with humans.
Step-by-step explanation:
Chimpanzees are quite adept in making and using tools, which shows their ability to use insight and address problems. In 1960, Jane Goodall observed a chimpanzee create a tool by stripping leaves from a twig and using it to 'fish' for termites, demonstrating an innovative way to gather food. Furthermore, chimpanzees have been noted to sharpen sticks to fashion spears for hunting, as well as using stones as hammers to crack open nuts. The use of materials from their environment to create tools indicates a level of cognitive skills that are significant in understanding the evolution of intelligence and the development of technology among primates, highlighting similarities to human ancestors.