Final answer:
Jane Goodall discovered that chimpanzees possess the ability to create and use tools, such as twigs for termite fishing and sticks as hunting spears, highlighting their problem-solving skills and cognitive abilities.
Step-by-step explanation:
Jane Goodall's research showed that chimpanzees have the ability to make and use tools. In her pivotal observations during the 1960s, Goodall discovered chimpanzees could strip leaves off twigs and use them to "fish" for termites, demonstrating insight and problem-solving abilities. Moreover, these primates have been seen making various types of tools, such as sharpening sticks to use as spears for hunting or utilizing stones as hammers to crack open nuts. The advancements in tool-making reflect a level of intelligence and adaptability in chimpanzees that is profound for understanding both their behaviors and the evolutionary underpinnings of human tool use.