They teach that all answers are given by Scripture. I wish to refute that thinking by showing that there are a lot of questions brought up in Scripture that are not answered therein. For if in Tyre and Sidon had been worked the miracles that have been worked in you, they would have repented long ago in sackcloth and ashes. Others were tortured, refusing to accept release, that they might find a better resurrection. However, the answers are found by Catholics through tradition, and in the 7 books which Protestantism removed from the Holy Bible, and in the Apocryphal books.
Catholics have the fullness of truth.
They have all of the pieces of the puzzle. Protestantism has many pieces missing to their puzzle of GOD's salvation history. As long as they cling to the false doctrine of sola scriptura, they will never see the full picture. They will never have the fullness of truth.