Which of the following describes polyphony?

Polyphony refers to a texture in music where two or more independent melodies are combined. This means that in a polyphonic composition, each melody is distinct and can stand alone, yet they harmonize and interact with one another to create a rich and complex musical experience. This contrasts with homophony, where there is a primary melody supported by chords.

In polyphonic music, the interplay between these melodies can create intricate patterns and develop various themes within a piece, making it a hallmark of certain styles, particularly in Renaissance and Baroque music. Because of this characteristic of blending multiple melodies, option C accurately captures the essence of what polyphony is.

The other options do not reflect the definition of polyphony. A describes monophony, which consists of a single melody without accompaniment. B is too broad and could refer to a variety of musical textures and styles, including monophony or homophony. D focuses on solo singing, which doesn't encapsulate the concept of multiple independent melodies interacting, a fundamental aspect of polyphony.