In musical terminology, what is homorhythm?

Homorhythm refers to a musical texture in which multiple parts or voices move together with the same basic rhythm, creating a unified rhythmic structure. This texture allows for clarity and coherence in the musical lines, as each part aligns rhythmically, which can enhance the overall effect of the harmony.

In contrast to other textures where parts might have differing rhythms that contribute to a more complex and intricate sound, homorhythmic arrangements are more straightforward. This technique can be particularly effective in choral music and hymn settings, where a clear, collective sound is often desired.

Thus, the essence of homorhythm lies in that synchronized rhythmic movement across the involved musical lines, which makes the option highlighting this concept the correct choice.