Answer:
D. adult offenders who abuse juvenile offenders in prison
Step-by-step explanation:
"The Beast" is a book that strongly criticizes the situation in which young working class people, considered delinquents, lived in the Denver juvenile court, one of the first juvenile courts created across the country. These young people were placed in prisons, with no structure for them and no plan to protect them from adult prisoners who were extremely aggressive and bestial.