Can adults be adopted, and if so, under what conditions?

Adults can indeed be adopted, and the adoption process generally requires that there is a demonstrable relationship or understanding between the adopting individual and the person being adopted. Option B correctly identifies that adults can be adopted if the adopting person is older, as this can help establish a familial bond that aligns with the spirit and intentions of adoption laws. Additionally, the requirement for an "acceptable reason" reflects the understanding that there needs to be a valid motivation or purpose for the adoption, which could include factors such as creating legal parental rights, inheritance purposes, or establishing a formal support network.

This understanding aligns with practices in many jurisdictions where, although the process may be simpler for minors, adult adoption is permissible and is often utilized for various personal, emotional, or legal reasons. The focus is on the nature of the relationship and the consent of both parties involved, making option B the most accurate reflection of the conditions under which adult adoption can occur.