Final answer:
In middle childhood, fathers' interactions with children revolve around encouraging independence.
Step-by-step explanation:
In middle childhood, fathers' interactions with children often revolve around encouraging independence, which is option D of the given choices. Fathers play an important role in promoting their children's autonomy and self-confidence. They provide guidance and support, allowing their children to take on age-appropriate responsibilities and make their own decisions. This helps children develop important life skills and prepares them for adulthood.