Final answer:
Members of a cooperative group have an interdependent relationship, relying on each other for support and cooperation.
Step-by-step explanation:
The relationships between members of a cooperative group are best described as interdependence. In an interdependent relationship, individuals rely on each other for support and cooperation to achieve common goals. This is in contrast to dependence, which implies one-sided reliance, and competition, which suggests a competitive rather than cooperative dynamic.