How does a proper warm up affect blood flow?
A. Blood flow increases.
B. Blood flow decreases.
C. Blood flow increases and then decreases.
D. Blood flow decreases and then increases.

A. Blood flow increases

Explanation: A warm up revs your cardiovascular system increasing your temperature and the heat that is building up. It increasing blood flow to your muscles. I don't know if this helps?

i'm not sure i completely understand your question, but i will do my best.

i think the answer you are looking for is sequence. (see below)

a repeated melodic fragment would be best defined as repetition, while repeated chords (different or the same) could be a chord progression. however, you then mentioned the chord and melodic fragment beginning on higher or lower pitches, in that case, the answer could be best defined as a sequence. the definition of a sequence is as follows: "the restatement of a motif or longer melodic (or harmonic) passage at a higher or lower pitch in the same voice."

let me know if this !