Considering a case with many-to-many relationships, how would you structure a query to retrieve related data efficiently?

Employing the Include method allows for efficient retrieval of related data in many-to-many relationships. This method eagerly loads related entities along with the main entity in a single query, reducing the need for additional database round-trips. JOIN clauses can also be used, but they may require more manual handling and may not be as intuitive as the Include method. Utilizing navigation properties simplifies querying by directly accessing related entities, but it may lead to performance issues if not used judiciously. Projection involves selecting specific fields or properties from entities but may not directly address the efficient retrieval of related data in many-to-many relationships.