The 'Relies-On' relationship in the Enterprise Product Catalog (EPC) is designed to define dependencies between commercial products. Setting the decomposition scope to 'OrderItem' ensures this dependency is evaluated at the order line item level. During order decomposition, this configuration allows the Order Management system to identify the related products within the same order and group them into a single fulfillment request for the provisioning system, as required. This approach correctly models the business logic directly within the product catalog for streamlined and automated fulfillment.

A. The 'Account' scope is too broad; it applies the relationship across all orders for an account, not for specific, related items within a single order.

C. 'Relies-On' is a type of decomposition relationship, not a valid value for the decomposition scope itself. This option is technically invalid.

D. While a bundle could group products, the question specifies they are 'independent commercial products,' making a 'Relies-On' relationship the more appropriate and flexible solution.

1. Salesforce Help, Industries Order Management Developer Guide, "Decomposition Relationships". This section details the 'Relies-On' relationship type and explains the different decomposition scopes, including 'OrderItem', which applies the relationship to items within the same order.

2. Salesforce Help, Industries Order Management Developer Guide, "How Decomposition Works". This guide explains that the scope of a decomposition relationship determines which items the relationship applies to, confirming that 'OrderItem' scope is for items in the same order.