21. The main purpose of the passage is to:
Your Answer is
Correct Answer is D
Explanation
The entire article is devoted to the beginning, development, and achievements of Rosetta Tharpe's musical career.
Item D: Several events in Tharpe's early music career, in line with the main theme of the article.
Item A: The comparison between the two kinds of music is not the focus of the article.
Item B: Comparing Tharpe's gospel with other singers' gospel is a detailed description.
Item C: The focus is not on other musicians.