Final answer:
The main idea of the paragraph is that Neil deGrasse Tyson received the brunt of the negative attention for the collective decision to reclassify Pluto, even though multiple people were involved in the decision-making process.
Step-by-step explanation:
The main idea of the provided paragraph is option C, which states that Neil deGrasse Tyson received the most negative attention for the decision about Pluto, despite the decision being made by many people. This controversy is linked to his role as the director of the Hayden Planetarium, where the exhibits did not include Pluto as a planet, a decision that sparked debate and criticism. Tyson's prominence in the field and public eye often made him a focal point for such discussions, particularly regarding matters involving public science education and engagement, as with the Great Planet Debate.