根据以下具体目标陈述,辨别此说服性演讲关于何种问题 To persuade my audience that you should be a volunteer for the 2016 G20 Summit in Hangzhou.
A、关于态度问题 persuasive speech on question of attitude.
B、关于政策问题。persuasive speech on question of policy.
C、关于价值问题 persuasive speech on question of value.
D、关于事实问题。persuasive speech on question of fact.