Sales and Service products will be created by two teams that will use second generation...

The correct selection is B. Second-generation managed packages that share a namespace can selectively expose public Apex across package boundaries through @NamespaceAccessible. This preserves modular package ownership while creating an explicit contract for only the methods that another same-namespace package should consume. From a build perspective, the implementation should be source-driven, reviewable, automatable, and modular. Engineering controls such as version control, package boundaries, static analysis, coding standards, and isolated development environments reduce defects early and make changes easier to understand, test, and promote. The rejected choices either rely on manual review alone, use the wrong development abstraction, or introduce custom complexity where Salesforce already provides a source-driven engineering mechanism. For this scenario, the decisive point is therefore the platform behavior represented by the selected option (B. Create two second generation managed packages with the same namespace and set the methods that should be shared with the @namespaceAccessible Annotation.). Applying that rule consistently keeps the implementation aligned with Salesforce-supported lifecycle practices and makes the resulting change easier to review, validate, and operate across environments.

Study Guide reference: Building — Salesforce DX; package development; coding standards; static analysis; source control; secure development.