The idea presented in both excerpts is:
3. Individuals finding and accepting their place in the world.
In the excerpt from Billy Collins's "Man Listening to Disc," the speaker is depicted as wandering along 44th Street while listening to Sonny Rollins, suggesting a sense of contentment and belonging with the music as a companion. This illustrates the theme of finding solace or comfort in one's surroundings and personal experiences.
The notion of individuals finding and accepting their place in the world can be inferred from the speaker's connection to the music, which acts as a source of companionship and guidance as he navigates through the street. This idea emphasizes the importance of personal exploration, self-discovery, and embracing one's role or position in the broader context of life.