I think the answer is if listeners would devote some of their time to listen and if they would pay for an amount to have premium accounts so they can further have more features and gain privileges on songs that they wanted to hear. Another concern is if they had the right design and strategy to gather enough or more listeners on the radio station so they can maintain operation.
Explanation:
I cant see what you need from paragragh three..Show a picture of it
The answer to the question above is that, IT EVALUATES THE EVIDENCE. Notice that the first sentence is talking about recording of choral groups and Hildegard of Bingen's work is also part of it. The work of Bingen here is being emphasized as it relates to the recordings. Now, the second sentence here adds more information about Bingen's work by evaluating the evidence.
I believe the answer is D) Christian themes