Answer:
B. Even though the decision about Pluto was made by a lot of people. Dr. Tyson received the most negative attention for it.
Step-by-step explanation:
The central or main idea of the paragraph is one which the author wants to convey to his/her readers. In most of the cases, even if substitute other information, nouns, places dates etc. the central idea remain the same. However if we change the central idea/point of the paragraph, it will become something totally new.
This paragraph from Neil deGrasse Tyson's "The Pluto Files" starts about telling the readers about that decision which was made by consensus, gives supporting details, and ends with author telling the readers what happened as a result of that decision (he was branded as a public enemy by Pluto lovers.)
Options A, C, and D are not even talked in this paragraph.