Answer:
the answer is C. he had a great memory!
It needs a aperture, compound lens, a photosensitive plate or paper, and a included box for the photosensitive paper to not get exposed by other light sources or a box that is black covered inside and out to not reflect any other light other than what comes thru the aperture or the shutter to precisely capture a amount of light to expose the film properly and not over or under expose it.
9. Measure 9 the accidental A# is used meaning every A in that measure will be A#
10. the Italian term in measure one is piano, that means you play softly
11. The Italian term in measure 9 (mf) meaning <span>mezzo</span> forte, meaning moderately loud.
12. the dots in that measure is staccato means to shorten the note from its actual value
13. the dynamics in measure 5 and 6 are crescendo and diminuendo meaning you gradually raise the volume up or down depending on the dynamic.
14.Usually, the last measure of a piece has the double bar line but the quality of the picture isn't at its best so I don't know
15. For measure 5&6 that curve above them is a *slur* meaning to drag out those two measures
16. At the top of the piece, every song has their own tempo but your piece means at a walking pace
