Which type of group plays a more significant role in an individual's life and serves expressive functions?

The correct choice highlights primary groups, which are characterized by close, personal relationships and a deep emotional connection among members. These groups serve essential expressive functions, meaning they fulfill the psychological and emotional needs of individuals. Members of primary groups, such as family and close friends, provide support, love, and a sense of belonging, which are crucial for healthy psychological development.

Primary groups contrast with other types of groups, such as secondary groups, which are more formal and goal-oriented, focusing on specific tasks or objectives rather than emotional support. Aggregate groups consist of individuals who are in the same place at the same time but do not have a lasting or meaningful interaction, lacking the intimate emotional connections found in primary groups. Reference groups, while also significant, serve as a standard for self-evaluation and influence behavior but do not usually provide the same depth of emotional engagement as primary groups. Therefore, when considering the impact on an individual's life and the expression of emotions, primary groups clearly play the most vital role.