Final answer:
The nurse should conduct a comprehensive family assessment for children with developmental delays, a history of repeated accidental injuries, behavioral problems, and those receiving comprehensive well-child care.
Step-by-step explanation:
The indications for the nurse to conduct a comprehensive family assessment include children with developmental delays (I), children with a history of repeated accidental injuries (ii), children with behavioral problems (iii), and children receiving comprehensive well-child care (iv). Therefore, the correct answer is a. I, ii, iii, and iv. Conducting a comprehensive family assessment helps the nurse gather information about the child's overall health, development, and any potential risk factors that may be affecting the child's well-being.