Final answer:
The emotion communicated to the listener through the refrain of "Swing Low, Sweet Chariot" is sorrow and grief (A).
Step-by-step explanation:
The emotion communicated to the listener through the refrain of "Swing Low, Sweet Chariot" is sorrow and grief (A). The lyrics of the song express the sorrows and hardships experienced by slaves, and the music conveys a sense of melancholy. The refrain is filled with pathos and longing, evoking a deep emotional response from the listener.