Final answer:
The concept of triadic closure supports the stability of the friendship between Pierre, Michaela, and John even with varying closeness among members, reflecting how triads differ from dyads in their resilience to individual withdrawals.
Step-by-step explanation:
The concept of triadic closure suggests that social relationships within a triad, or three-member group, are stable even when one of the relationships is weaker than the others. Pierre, Michaela, and John might remain friends because a triad can sustain itself even if not all relationships are equally strong. This dynamic is rooted in the sociological study of small groups. If one person withdraws from a triad, the group can still exist, making the relationship less susceptible to dissolution compared to a dyad, which is a two-member group. While Pierre and Michaela might have a stronger bond, their friendship with John contributes to the stability of the group. Additionally, primary groups, like close friends or family, serve as fundamental connections in a person's social network, providing happiness, fulfillment, and even good health.