Option A ‘Extraordinary is the most appropriate synonym of the given word ‘Stellar’. Meaning of the other words are: Extraordinary means remarkable, very unusual or remarkable. Eclipse means an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination. Poor means lacking sufficient money to live at a standard considered comfortable or normal in a society. Not a great means something which is not great, ordinary.