The correct answer is (D).The greatest superheroes are those who have to try to beat their own flaws.
Usually when you think of a opinion,you are thinking of something that you think is good or bad.A opinion is not true.
(D) is correct because some people might disagree that the greatest superheroes are those who have to try to beat their own flaws.But nobody can argue about the rest of the sentences.
The event where they call the police because they trust their instinct or when something is wrong and asks for help or when b utterson and pooole enter dr jekyll labarartory even though they are not afraid and or they buy strange medicene