Final answer:
Margot Fonteyn spent her whole career with the Royal Ballet.
Step-by-step explanation:
Margot Fonteyn, a world-famous ballerina, spent her whole career with the Royal Ballet, which is option A.
The Royal Ballet is a renowned ballet institution based in the United Kingdom. It was founded in 1931 and is associated with the Royal Opera House in Covent Garden, London. Fonteyn joined the company, then known as the Sadler's Wells Ballet, in 1934 and became its prima ballerina in 1935.
Throughout her career, Fonteyn performed in numerous ballets with the Royal Ballet, including classics like 'Swan Lake,' 'The Sleeping Beauty,' and 'Giselle.' She established herself as one of the greatest ballerinas of all time and left a lasting legacy in the world of ballet.