💡 Detailed Explanation
Translation of Script:
- Narrator: A woman and a man are talking. Why won't the man go on the trip?
- Woman: Sato-san, won't you go on a trip with us next week?
- Man: A trip? That sounds nice, but I can't go.
- Woman: Oh, why? Do you have no money?
- Man: No, I have saved some money. But I am very busy with my job right now.
- Woman: I see. That's a pity.
Explanation of Answer:
- The woman guesses he might have no money (お金がないの？). The man denies this: 'No, I have money' (いいえ、お金はあります).
- He explains the real reason: 'But I am very busy with my job right now' (でも、今は仕事がとても忙しいんです).
- Therefore, the reason is being busy with work. Choice 3 (仕事が 忙しいから) is correct.