Universal Containers has two sales teams, sales team A and sales team B.

In this scenario, the two teams are "peers" in the role hierarchy (both reporting to the same manager). In a private sharing model, peers cannot see each other's records by default. To grant lateral access between these specific groups, an Owner-based Sharing Rule is the most effective solution. The administrator can create a rule stating that any records owned by members of "Role: Sales Team A" should be shared with members of "Role: Sales Team B" with specific access levels (e.g., Read/Write). Hierarchical sharing (Option C) only grants upward visibility to the Manager role, not across to the other team34. Manual sharing (Option D) is inefficient for an entire team35. Criteria-based sharing (Option A) is used when record field values determine access, whereas this requirement is based specifically on who owns the records36.