Which of the following is a legal requirement for determining a newborn infant's safety?

The requirement that a licensed physician must deem the infant safe is crucial for ensuring the welfare of newborns. Medical professionals are trained to evaluate various factors that contribute to an infant's safety, including overall health, potential risks, and necessary care. This process is vital for identifying any immediate or underlying health concerns that may affect the infant's well-being.

The involvement of a licensed physician provides a professional assessment that takes into account established medical guidelines and standards for infant care, as well as knowledge about any signs of neglect or abuse. This professional evaluation helps ensure that the infant is placed in a safe environment, where their physical and emotional needs can be adequately met.

Other options, while they may contribute positively to an infant's overall wellness and environment, do not constitute a legal requirement for assessing safety in the same manner that a physician's evaluation does. Thus, ensuring that a licensed physician has deemed the infant safe establishes an essential legal and medical standard for safeguarding newborns’ health and safety.