Which of the following best defines the extent to which members of a group support and validate one another at work?

The definition of the extent to which members of a group support and validate one another at work aligns closely with the concept of group cohesion. Group cohesion refers to the bonds that hold a group together, which can manifest in mutual support, trust, and validation among its members. When group cohesion is strong, individuals feel a sense of belonging and commitment to the group, which fosters an environment where members are more likely to provide encouragement and affirmation to one another. This supportive culture can lead to increased collaboration, better communication, and overall improved performance within the team.

The other concepts, such as power, effectiveness, and reward power, pertain to different aspects of group dynamics and organizational behavior. Power generally relates to the ability of an individual to influence others, effectiveness pertains to how well a group achieves its goals, and reward power refers specifically to the capacity to offer incentives or rewards to motivate behavior. While these elements are important in organizational settings, they do not encapsulate the supportive and validating relationships that are indicative of group cohesion.