What is an essential action in adoption processes?

Legal steps are an essential action in adoption processes, as it is necessary to follow legal procedures in order to legally adopt a child. Annual family picnics (choice A) may be a fun tradition for an adoptive family, but it is not an essential action in the adoption process. Mandatory community service (choice C) may be a requirement for some adoptive families, but it is not essential for all adoption processes. Bi-weekly meetings with child welfare (choice D) may be a part of the adoption process, but it is not an essential action as it may vary depending on the specific adoption process. Therefore, legal steps (choice B) are the only essential action in adoption processes.