In Germany, the last four weeks before Christmas are called …

EDITORIAL LEARNING AID

Why is this answer correct?

The four weeks before Christmas are called the Advent season; it begins on the fourth Sunday before 25 December and is marked by an Advent wreath with four candles. The Day of Repentance and Prayer (a), the harvest festival (b) and All Saints' Day (d) are individual days or festivals and do not describe this period.

Four weeks before Christmas: Advent season with four candles.

This translation and explanation are editorial learning aids. The official German wording and answer key govern the examination.