After reading the answer options, we can say the author would best provide additional support for the idea that playing the trumpet is not as easy as it sounds:
C. By explaining how tired mouth muscles become after buzzing for thirty minutes.
We are looking for evidence to support the claim that playing the trumpet is more difficult than it seems.
We can eliminate letter A because the trumpet only has three keys. Making this comparison with other instruments would make playing the trumpet seem easy.
We can also eliminate letter B because this description conveys excitement rather than difficulty.
We can eliminate letter D because detailing such differences would not be relevant for the claim.
The correct option is letter C. By explaining how sore and tired the mouth muscles feel after only half an hour playing the trumpet, the author would convey the idea that playing it is difficult.
Learn more about supporting ideas here:
brainly.com/question/20412019
