The answer is C), playing a simple scale.
The sentence should be this: She demonstrates how to tune her instrument and she also played the simple scale.
Compromising your viewpoints and behavior is bad generally: it will in the end only lead to frustration and will be a hindrance in achieving one's goals.
There are many situations in which compromising the viewpoint is bad, and one of the is an interpersonal conflict: it might solve the problem in a short-term, but not in a long term.
I think the answer is A I think because that sound pretty funny
Run, sleep, travel, wonder, die
D.
Why does it have to be 20 characters? ????????????