Final answer:
The family functioning assessment should be completed within 30 days after developing a present danger safety plan.
Step-by-step explanation:
The family functioning assessment should be completed within 30 days after developing a present danger safety plan. This is based on the guidelines outlined in the Prevention and Treatment Act (42 U.S.C. 5204() (2) (B) (4)), which states that within 2 years of the date of this order, the Secretary shall outline reasonable best practice standards for risk and safety assessment, including how to address domestic violence and substance abuse.