What is an arpeggio?
a)a blend of several tones, which reverberate simultaneously
b)playing a series of chords in a particular order
c)unsteady combination of chords producing rough sound
d)musical notes set to sound in a discontinuous manner

is a type of broken chord, in which the notes that compose a chord are played or sung in a rising or descending order.

Explanation:

An arpeggio may also span more than one octave. The word arpeggio comes from the Italian word arpeggiare, which means to play on a harp.

the answer to your question is d. any light source appearing in a scene

explanation: