Answer: I think it is (1256)
C: an interval is the distance in frequency between two tones (notes)
I believe the answer is A. The figure look more life like.
An elaborate musical composition for full orchestra, typically in four movements, at least one of which is traditionally in sonata form.
"Beethoven's Fifth Symphony"
HISTORICAL
an orchestral interlude in a large-scale vocal work.
NORTH AMERICAN
(especially in names of orchestras) short for symphony orchestra.
"the Boston Symphony"