Final answer:
Chimpanzees making and using tools should be categorized under 'Tool Use', their omnivorous diet under 'Diet', and details about their habitat or social structure do not fit into the categories 'Tool Use' or 'Diet'.
Step-by-step explanation:
When organizing information about chimpanzees for a report, the correct sections for the given statements are as follows:
One special characteristic of chimpanzees is that they make and use objects to accomplish tasks. - Tool Use
Chimpanzees are omnivores, which means they eat foods that come from both plants and animals. - Diet
Chimpanzees shape sticks to fish for insects in their nests below ground or in the bark of trees. They also use stones to break open nutshells. - Tool Use
Chimpanzees live in social groups in African grasslands, rain forests, and woodlands. - Neither (this statement relates more to habitat or social structure)
Studying chimpanzee behavior in varied environments like Gombe National Park in Tanzania and the savannah at Fongoli in Senegal can provide insights into their diet, tool use, hunting techniques, and social dynamics. It also helps us understand the similarities and differences in behavior between these groups of chimpanzees, which in turn sheds light on humanity's ancestral use of tools.