The patterns of words and rhythms of the blues was standardized in the a. late 1700's. b. mid 1800's. c. early 1900's. d. in the late 1960's.

The patterns of words and rhythms of the blues was standardized in the

C. early 1900's

Explanation:

Rhythm and Blues is a musical genre born in the United States, it was developed in the 1920s and 1930s. In Chicago, Detroit, and New York City, by Jazz musicians that mixed rhythms and words to assemble a pattern that took form and became popular in African-American populations in the 1940s. To be marketed as Rythm and Blues. Some of its precursors were: Lonnie Johnson and Leroi Carl.

tending to cause harm