💡 Detailed Explanation
Translation of Script:
- Narrator: In the morning, you met your teacher at school. What do you say?
- Choice 1: Goodbye. (さようなら)
- Choice 2: Hello / Good afternoon. (こんにちは)
- Choice 3: Good morning. (おはようございます)
Explanation of Answer:
- The appropriate polite morning greeting is 'おはようございます' (Good morning). Choice 3 is correct.