I didnt go with D because theres a difference between an authority and expert

@Lucas, Yes, the correct answer is (E) "taking for granted that experts do not act counter to what, according to their expertise, is in their best interest." (D) is incorrect not necessarily because of the word "authority," but because the passage does not provide any information on authorities besides doctors. In order to claim that other authorities provide conflicting advice, we would need this information. Please let us know if you have any questions about this or would like a more thorough explanation. With regards to technological difficulties seeing correct answers or replying to other message board posts, please contact our support team. You can do this by tapping "support" from the left menu or by calling 855.483.7862 ext. 2 Monday-Friday 9am-6pm PT. Our support channels are a much faster way to resolve these type of issues. Best of luck with your studies!