ANSWER: 70,000, everything is added including percentages, i think i did this right.
It's a tricky one but I will go for "appositive". Because;
•it adds information about Kim's choice or explains it,
•it's placed between commas
• it's a nonessential appositive because if you removed it the meaning of the sentence would still be clear.
Hope that helps..
I believe it is prose D because the definition for probe is -written or spoken language in its ordinary form, without metrical structure.