Can a 20 year old adopt he younger sisters when social services was called on the parents?

Yes, a 20-year-old can potentially adopt their younger siblings, but it typically requires approval from the court and social services. The process involves ensuring that the adoption is in the best interest of the children, which may include assessments of the young adult's ability to provide a stable and safe environment. Additionally, the biological parents' rights would need to be terminated for the adoption to proceed. It’s advisable for the individual to seek legal guidance to navigate the process effectively.