Which type of opinion should someone consult to understand why a particular supreme court justice disagreed with the court’s ruling on a case?

Dissenting opinion

Explanation:

A dissenting opinion is an opinion in a legal case in which a judge expresses his disagreement with the majority opinion. In these cases, the judge will also explain the reasons why he does not agree with the ruling. Dissenting opinions do not become binding precedent. Nevertheless, they can still be important pieces of persuasive information for future rulings.

i think your answer there is c