The correct answer is B. In the 1960s, Bob Dylan became famous for composing influential counterculture music.
Bob Dylan is an American musician, composer, singer and poet, widely regarded as one of the most prolific and influential figures in popular music of the twentieth century and early twenty-first century.
Much of his most famous work dates from the 1960s, when he became known as a folk singer-songwriter with compositions such as "Blowin 'in the Wind" and "A Hard Rain's a-Gonna Fall" with an important content of social protest. After leaving behind folk music, Dylan modified popular music in 1965 with the album Highway 61 Revisited, one of the most influential musical works of the 20th century, in which he combined rock music with complex and literary compositions influenced by surrealist imagery. His first single, "Like a Rolling Stone", was chosen as the best song of all time by Rolling Stone magazine and reached the second place on the American Billboard Hot 100 list.