Sarah: Hi David, how was your weekend?
David: It was good, Sarah! We visited my grandmother. She's still very active.
Sarah: That's great! What does she do these days?
David: Well, she used to be a nurse, but she retired a few years ago. Now, she volunteers at the local community center twice a week, helping with activities for the elderly. It's not a job, but she keeps busy. My uncle, her son, works as an engineer. He designs bridges and works at a big construction company downtown.
Yukarıdaki diyaloğa göre, David'in amcasının çalışma yeri neresidir?
A) A hospital.
B) The local community center.
C) A big construction company.
D) A school.
E) A small local shop.