Answer:
the subject
Explanation:
this is because it explains what the whole thing is talking about
康熙, Kangzi was the second emperor of the Qing dynasty ruling from 5th February, 1661 till 20th December, 1722.
It's either going to be A or B because a C is talking about interviewing one person and D doesn't make sense because what happens if you can't here the radio clearly or it might keep going in and out
