Read the following excerpt from a fictional narrative:
As she walked through the busy streets, the cacophony of car horns and chattering crowds enveloped her, pulling her into a vibrant tapestry of urban life. The sun dipped low on the horizon, spilling golden light over the slick pavement, illuminating the faces of strangers bustling about their day. She relished the chaos, finding beauty in the harmony of dissonance that each moment offered.
Considering the use of language in this passage, which of the following words most effectively captures the author's intention to convey an energetic and lively atmosphere?