The correct answer is C) popular sovereignty was now illegal.
The provision that was not included in the Compromise of 1850 was that popular sovereignty was now illegal.
The Compromise of 1850 gave both North and South, some gains that maintained relative peace for a while. The Southern states gained the fugitive slaw law, that allowed slaves to returned their original owners in the Confederated state. The North gained another territory, California. In Washington D.C., slavery was prohibited. Slavery practices in New Mexico and Utah were not restricted. And the state of Texas lost some of its territories but was compensated for it.