Explanation
A. The passage does discuss the reduction in tooth and jaw size but does not limit it to a single event approximately 100,000 years ago.
B. The passage suggests that the adoption of cooked food diets is linked to an evolutionary advantage due to higher caloric intake, not that it limited humans' ability to survive on a high-meat diet.
C. Although the passage acknowledges some complexity in understanding the evolution of the digestive system, it doesn't imply that it is not well understood as a whole.
D. (Correct Response) The passage indicates that cooking methods have evolved over time, with the implication being that earlier adoption of cooked food created new dietary opportunities for humans and contributed to evolutionary changes.
E. There is no suggestion in the passage that cooking was adopted simultaneously by diverse human populations.
The passage indicates that cooking and its methods have a long history, going back more than 250,000 years, suggesting that there has been a change and improvement over evolutionary time, which has played a role in human development.