According to the passage, Dr. Jane Goodall’s research was important because:
A. Dr. Goodall was the first scientists to study chimpanzees in their natural habitat.
B. Dr. Goodall discovered previously undocumented chimpanzee behavior.
C. Dr. Goodall had always argued that chimpanzees were actually carnivorous creatures.
D. Dr. Goodall discovered that red colobus monkeys make up 80% of chimpanzees’ diets.