Exam PL-300 topic 2 question 111 discussion

I would suggest : 1. Auto Date/Time Auto Date/Time is a Power BI feature that automatically creates a Date Hierarchy (Year, Quarter, Month, Day) when a Date column is present. In the provided screenshot, the Date table has an automatically generated hierarchy, indicating that Auto Date/Time was enabled. Marking a table as a Date table disables Auto Date/Time, removing any automatically generated date hierarchies. 2. The MonthEndDate Date Hierarchy from the Data Table Auto Date/Time was used, removing it will delete automatically created hierarchies (e.g., MonthEndDate Date Hierarchy).

Date Hierarchy- Es importante tener en cuenta que, al marcar una tabla como una tabla de fechas, Power BI Desktop quita la tabla de fechas integrada (creada automáticamente). Y los objetos visuales o expresiones DAX que haya creado anteriormente en función de esas tablas integradas ya no funcionarán correctamente. https://learn.microsoft.com/es-es/power-bi/transform-model/desktop-date-tables#benefits-of-setting-your-own-date-table

Quick Measures / Date Hierarchy https://learn.microsoft.com/es-es/power-bi/transform-model/desktop-date-tables

Given answer is correct: Quick measures and The MonthStartDate column

Isn't it hierarchy?

It's "Mark as date table". There is a typo in the context.