Which of the following is a sign that a child may need social services intervention?

Frequent changes in living arrangements can be a significant indicator that a child may need social services intervention. Stability in a child's home environment is crucial for their emotional and psychological development. When a child experiences frequent disruptions in where they live, it can lead to instability, insecurity, and a range of emotional issues. This instability might arise from various issues such as family conflict, economic hardship, or other social factors that impact the child’s well-being.

In contrast, regular school attendance, active participation in community events, and having friends over frequently are typically positive signs of a child's engagement with their environment and support systems. These behaviors indicate stability and involvement in social relationships, which are beneficial for a child's development. Therefore, while the other options represent healthy social interactions and stability, frequent changes in living arrangements point towards potential risk factors that necessitate the consideration of social services for the child's welfare.