Answer
"The Boy Is Mine" was produced by Rodney Jerkins. Jerkins is a renowned American record producer and songwriter who has worked with numerous artists, including Whitney Houston, Michael Jackson, and Mariah Carey. He is known for his signature sound, which often incorporates elements of R&B, pop, and hip-hop. Jerkins' production on "The Boy Is Mine" helped to create a timeless classic that showcased the vocal talents of Brandy and Monica.