Final answer:
The country rap example from the unit is "Old Town Road" by Lil Nas X, a crossover hit blending country music and rap.
Step-by-step explanation:
The example of country rap given in the unit and the artist responsible for the song is "Old Town Road" by Lil Nas X. This song blends elements of country music with hip-hop and rap, creating a crossover hit that topped various music charts. Its catchy chorus, trap beat, and country-style lyrics contributed to its widespread popularity, making it a notable example of country rap.