💡 Detailed Explanation
The man (likely a superior) is expressing concern that Ms. Yamada might be struggling with a task alone. The best response is to thank him for his concern and honestly explain the situation, which opens the door for help. Response 1, 'Yes, everything is going smoothly, thanks to you,' is a possible answer if things are truly fine, but it doesn't quite fit the nuance of the concerned question. Response 2, 'No, it's my job, so please don't worry about it,' is a very cold and dismissive way to reject help, which is inappropriate in a professional setting.