Final answer:
In middle childhood, popular children tend to be attractive and relatively mature for their age.
Step-by-step explanation:
In middle childhood, popular children tend to be attractive and relatively mature for their age. This statement is true.
During middle childhood, children become more independent and physically active. They also start to develop more complex thinking skills and are more involved with friends. Popular children in this age range often possess desirable physical characteristics and exhibit greater emotional maturity, which can contribute to their popularity among peers.