D.Time-consuming to develop is the chosen one.
I think that it's
B. alliteration
because with alliteration it means you can describe what you hear
I think the answer is B memorable if you said a long speech im not going to remember it because it was to long. Now if you said a shoert speech then i would remember becasue it is easier because it's shorter
it is troublesome because there's some people who just cant handle the black uprising war