Solution:Vaslav Nijinsky, one of the most legendary ballet dancers of the early 20th century, is remembered for several groundbreaking contributions to dance:
A. Association with Paris Opera - Not accurate. Nijinsky was primarily associated with Sergei Diaghilev's Ballets Russes in Paris, not the Paris Opera Ballet.
B. Radical break with traditional movement - His choreography (e.g., The Rite of Spring) shocked audiences with angular, grounded, and unconventional movement, breaking away from classical ballet norms. C. Importance to the male dancer - He elevated the status of the male dancer, who traditionally played a secondary role to ballerinas, giving men prominence and equal importance.
D. Tremendous technique - Famous for his extraordinary leaps, strength, and expressiveness, Nijinsky's technique was unmatched in his era.
Thus, the correct combination is B, C, D only.