Respuesta :
A. Blithe and Strong
These are adjectives describing the atomosphere. The vocations are simply nouns and not strongly describing the mood. Answers C and D show actions but you can change the actions being done without changing the mood. If you take out the adjectives, then you change the tone.
Answer:A) The words Blithe and Strong
Explanation: Enthusiastic tone is the one described by adjectives , which explains a great deal of excitement and interest. It shows eagerness and passion and strong emotions which are very serious.
It should be blithe and strong refers to how enthusiastic each has to be about their own singing.