Question

what is most likely the reason the author included the section \could a black hole destroy earth?\ a to disprove an existing idea about black holes b to encourage further research of black holes c to explain how the orbits of black holes change d to show how black holes and the sun are alike

Explanation:

The section title "Could A Black Hole Destroy Earth?" addresses a common popular fear/misconception about black holes. The most logical purpose is to counter this widespread existing idea by providing factual information that disproves it. Option B is incorrect because the title does not signal a call for research. Option C is unrelated, as the title does not reference orbits. Option D is irrelevant, as the title does not compare black holes to the sun.

Answer:

A. to disprove an existing idea about black holes