💡 Detailed Explanation
Translation of Script & Choices:
- Narrator: You enter the teacher's room. What do you say?
- Choices:
1. ごめんください (Excuse me / Is anyone home? - used when visiting someone's house/shop entrance)
2. しつれいします (Excuse me - literally 'I am going to commit a rudeness' - used when entering offices/rooms)
3. おねがいします (Please / I request your favor)
Explanation of Answer:
- When entering an office, classroom, or a teacher's study room, the polite greeting is '失礼します' (しつれいします - shitsurei shimasu). Therefore, Choice 2 is correct.