Answer:
my bad I just need points
I realize this was posted 2 weeks ago, but in case anyone still needs the answer...
True- this method was known as the daguerreotype<span>.</span>
I would say the correct answer is C. the cadenza.
Cadenza is defined as "<span>an </span>improvised<span> or written-out </span>ornamental passage<span> played or sung by a </span>soloist<span> or soloists,' so you can see that the important part of the cadenza is that it is improvised. It is used to show the skill of the performer.</span>