Answer:
The answer is: making sure a conclusion is accurate by checking several sources.
Explanation:
"Corroboration" is a process of proving a proposition, statement or idea with the help of an evidence. Its purpose is to secure people when it comes to unreasonable sources of evidence (especially when such evidence is used against them).
The skill of corroboration is making sure a conclusion is accurate by checking several sources. This means that it tries to confirm whether the initial evidence is indeed valid, true or verifiable.
Thus, this explains the answer.
