Final answer:
Nick Carraway is a reserved and observant individual, preferring to listen and observe rather than actively participate in social events. He pays keen attention to details and provides thorough descriptions of his surroundings and insightful analyses of the people he encounters.
Step-by-step explanation:
Nick Carraway is a reserved and observant individual, as evidenced by his passive role in the narrative and keen attention to details. In chapters 1 and 2, he is portrayed as someone who prefers to listen and observe rather than actively participate in social events. For example, he attends Gatsby's party but spends most of his time observing the guests rather than actively engaging with them. This trait is further supported by his thorough descriptions of the surroundings and his analytical insights about the people he encounters.