These three examples show different applications of the same conversion rule.
رَجَعَتِ الْبَنَاتُ مِنَ الْمَدْرَسَةِ
→ الْبَنَاتُ رَجَعْنَ مِنَ الْمَدْرَسَةِ
The preceding mubtada is feminine plural, so the verb is رَجَعْنَ.
خَرَجَ فَاطِمَةُ وَزَيْنَبُ وَحَامِدٌ مِنَ الْبَيْتِ
→ فَاطِمَةُ وَزَيْنَبُ وَحَامِدٌ خَرَجُوا مِنَ الْبَيْتِ
The coordinated group includes a male, so the answer uses masculine plural خَرَجُوا.
خُلِقَ الْإِنْسَانُ مِنْ طِينٍ
→ الْإِنْسَانُ خُلِقَ مِنْ طِينٍ
The verb remains passive; the conversion does not invent an active subject.