Final answer:
In the 1990s, the rap style developed primarily by embracing storytelling and narrative lyrics, reflecting a shift towards more complex thematic content. Regional adaptations and stimulus diffusion resulted in diverse sounds and narratives within the genre. The correct option is c.
Step-by-step explanation:
The rap style developed in the 1990s through C) Embracing storytelling and narrative lyrics. This period saw a significant evolution in hip hop, moving beyond brash bravado to more complex thematic content.
Artists used rap as a medium to convey stories and narratives that reflected their experiences, dreams, and the realities of life in their communities. Contrary to options like incorporating classical music elements or minimizing percussion, the '90s rap was known for its strong and diverse rhythmic backbone.
Stimulus diffusion played a key role as hip hop spread from its Bronx origins, with artists in different locations adapting the style to reflect their local contexts and issues.
This evolution often resulted in distinct regional sounds and thematic focuses, such as the emergence of “gang star rap” from Los Angeles, which provided a stark contrast to Afrika Bambaataa's anti-gang messages. The correct option is c.