Final answer:
Soul music, named as such in the post-1950s, was a reflection of black pride and the updated rhythm and blues genre that displaced the term in Billboard magazine in 1964.
Step-by-step explanation:
Many blacks, resentful of the basically white flavor of the Motown sound, began to perform a kind of updated rhythm and blues.
They named it b) Soul, a post-1950s term for black pride and the term with which the music trade magazine Billboard, in 1964, replaced rhythm and blues.
This genre was a reflection of a broader movement that included Black Pride and cultural shifts. The music of this era sought to reflect the unique experiences and emotions found in African American communities, with origins deeply rooted in jazz, blues, and gospel traditions.
This evolution in musical styles paralleled the social changes in America during this time, especially in regard to the civil rights movement and the push for equality and recognition of African American culture.