Final answer:
The central ideas of the text focus on 21st-century American culture's celebration of diversity and inclusivity, and music's power to unify people across different backgrounds, as reflected in Mariah Carey's universal appeal.
Step-by-step explanation:
The central ideas of the text are closely related to cultural identity, inclusivity, and the universal language of music. Option C, which highlights Mariah Carey's music as a representation of 21st-century American culture that promotes joy through diversity and inclusivity, aligns with several excerpts provided. Moreover, option F discusses how Mariah Carey's "All I Want for Christmas is You" transcends cultural and linguistic barriers, which resonate with the notion that cultural expressions, like music, have the power to bring people together, regardless of background - an idea also supported by the context provided. While options A and D mention personal reactions and connections to Mariah Carey, they do not encompass a central idea that reflects the overarching themes of cultural integration and evolving American cultural sensibilities. Options B and E appear to be more focused on individual experiences rather than the central ideas related to the wider cultural discussions in the text.