GMAT Reading Comprehension (RC) | Re: Among the myths taken as fact by the environmental managers

Himikemcgarry or other experts,
I was confused with choice D in Question 54
54. Which of the following best describes the relationship of the statement about large plants (lines 18-26) to the passage as a whole?
(A) It presents a hypothesis that is disproved later in the passage.
(B) It highlights an opposition between two ideas mentioned in the passage.
(C) It provides examples to support a claim made earlier in the passage.
(D) It exemplifies a misconception mentioned earlier in the passage.
(E)