Explanation:

In Salesforce Industries CPQ, a sales catalog defines a curated set of products and promotions that are available for selection during the quoting or ordering process. It acts as a filtering mechanism to ensure that only relevant offerings are presented to users based on context, such as customer type, market segment, or business unit.

Key characteristics:

It includes commercial products, promotions, and bundles that are actively marketed or sold.
It helps streamline the user experience by narrowing down choices to what's applicable for a given scenario.
It works in tandem with context rules to dynamically qualify or disqualify items in the cart.

Why the other options don’t apply:

A. A catalog of prices: That’s handled by price lists, not the sales catalog.
C. A catalog of technical and commercial products: That’s more aligned with the Enterprise Product Catalog (EPC), which underpins the full product model.
D. Relies On dependencies: These are part of product relationships, not catalog definitions.