The first line of defense against a deadly collision is the ability to pay attention
The answer is B. "relief"
I might be wrong but this might be it
1. fundamental elements
2. music notation
3. these elements
4. music scores
5. melody, harmony, and rhythm
6. melody
7. the element that holds the music together
8. into music notation altogether
9. it's harmony and rhythm that are combined into melody that create the song without lyrics.
I tried my very best to figure it out. Sorry if it is wrong.
