Which of these factors can result in differences between individuals in a group?

Heredity is a key factor that can lead to differences between individuals in a group. It encompasses the genetic makeup and inherited traits of an individual, influencing various aspects such as physical characteristics, talents, and predispositions to certain behaviors or health conditions. These hereditary characteristics contribute to the uniqueness of each group member and can significantly impact their interactions, roles, and behaviors within the group.

In contrast, while relationship tensions, media influence, and attitudes of group members can certainly affect dynamics within a group, they do not stem from intrinsic biological or genetic differences. Relationship tensions may arise from interpersonal conflicts or communication styles, media influence often pertains to external societal factors that mold perceptions, and attitudes of group members can change with context and over time. However, heredity provides a foundational aspect of individual differences that is inherent to the person, affecting their identity and interaction with others in a fundamental way.