1. What is the Magisterium? *

2. The First Vatican Council solemnly defined which doctrine related to the Magisterium? *

3. Which level of Magisterial teaching requires the "assent of faith" (assensus fidei), the rejection of which is heresy? *

4. What kind of assent is required for authoritative but non-infallible teachings, such as those found in a papal encyclical like Laudato Si'? *

5. Which of the following is the most solemn and authoritative type of papal document? *