Which of the following is an organizational function of a group?

An organizational function of a group refers to the purpose or role that the group serves within an organization. Let's analyze each option to determine which one fits this description.

Option A, "coordinate interdepartmental efforts," refers to the function of a group in facilitating collaboration and coordination between different departments or units within an organization. This is indeed an organizational function of a group.

Option B, "provide an opportunity to test perceptions of social reality," refers to the function of a group in allowing individuals to validate their beliefs and understandings of the social world. While this may be a function of a group, it is not specifically an organizational function.

Option C, "build self-esteem," refers to the function of a group in enhancing individuals' self-worth and confidence. While this may be a positive outcome of group participation, it is not a primary organizational function.

Option D, "reduce anxieties," refers to the function of a group in alleviating or minimizing individuals' anxieties or stress. Again, while this may be a beneficial outcome of group participation, it is not a primary organizational function.

Option E, "fulfill the need for affiliation," refers to the function of a group in satisfying individuals' social and interpersonal needs for connection and belonging. While this may be a function of a group, it is not specifically an organizational function.

Based on the analysis, the only option that represents an organizational function of a group is option A, "coordinate interdepartmental efforts." Therefore, the correct answer is A.