Final answer:
Renaissance melodies are typically comfortable to sing because they are diatonic and have clear phrases.
Step-by-step explanation:
Renaissance melodies are typically comfortable to sing because they are diatonic and have clear phrases. Unlike melodies in a minor key or that are atonal, Renaissance melodies are based on diatonic scales, which are the basis for most Western music. This makes them familiar and easy to sing. Additionally, Renaissance melodies have clear phrases, meaning they are organized into distinct musical sections, which further enhances their comfort for singers.