Final answer:
African slaves used "call and response" songs on plantations to sustain their work and spirit.
Step-by-step explanation:
African slaves used "call and response" songs on plantations primarily to sustain their work and spirit (c).
Enslaved African Americans used call-and-response songs to communicate messages, bring people together, signal various needs, and make their presence known to others. These songs conveyed simple messages or made their whereabouts known to friends working elsewhere in the fields. The call-and-response form of the songs, along with syncopated rhythms and African-influenced body movements, helped maintain a sense of community and resist the dehumanizing forces of slavery.