💡 Detailed Explanation
The man is praising Yamada's efforts. The most appropriate response in a Japanese business context is to humbly deflect the praise and attribute the success to the team. Answer 1, 'No, no, it's all thanks to everyone on the team,' does this perfectly. Answer 2, 'Yes, because I worked the hardest,' is arrogant. Answer 3, 'If we can't talk about it, then it can't be helped,' misunderstands the idiomatic expression 'なくしては語れない' (can't talk about it without X) by taking it literally.