Final answer:
In the passage, 'bright' refers to the presence of light, as in 'the sun gleamed brightly on the parade,' signifying a literal brightness. The correct answer is option A. filled with light.
Step-by-step explanation:
The meaning of the word "bright" used in the passage is best defined as 'filled with light.' This is derived from the context provided, where it describes the sun gleaming brightly on the parade, implying the literal brightness or luminosity of the sunlight. The festive and lively setting, with the mention of revelry, streamers, and the sun gleaming, focuses on the visual and atmospheric aspect that the adjective 'bright' can summon.