Which type of alliance involves a partnership between an organization and its suppliers?

The correct choice is a vertical alliance, as it specifically refers to a partnership between an organization and its suppliers. In this type of alliance, organizations collaborate with entities in their supply chain to ensure better integration, coordination, and efficiency. This relationship can improve product quality, reduce costs, and enhance logistical efficiency by aligning goals and sharing resources along the supply chain.

Vertical alliances can also foster innovation, as both parties work together to share information and develop new solutions that can benefit the entire chain. Unlike horizontal alliances, which occur between organizations that share similar resources or operate at the same stage in the market, vertical alliances focus on the different levels of the supply chain, such as suppliers and distributors, thus playing a strategic role in enhancing the effectiveness of a company's operations.