<span>Using clashing, dissonant chords to accent despair would be employing the technique of tone clusters. </span>
False because it can confuse you if it is on all the time so they have it as a modifier
I don't know which autobiographical piece of art you are talking about, but generally an autobiography is about the writer himself.
So, having that in mind, I'd say that this is an autobiographical piece of art because <span>c. It shows the pain and suffering experienced by the artist. </span>