What is the correct hierarchical order from top to bottom in Tosca's requirement structure?

• A. Requirement Folder -> RequirementSet -> Requirement
• B. Folder -> TestCase -> Requirement
• C. Requirement Folder -> RequirementSet -> Requirement
• D. Requirement -> RequirementFolder -> RequirementSet

Answer: (C)

In Tosca, the requirement structure is organized in three levels from outer to inner: the top-level container is a Requirement Folder, which holds one or more Requirement Sets to group related requirements, and inside each set you define the individual Requirements that must be satisfied. This clear nesting lets you manage and reuse requirements more effectively, keeping broad groupings at the folder level, contextual groupings in the sets, and the concrete items as the actual requirements. So the correct top-to-bottom order is: Requirement Folder → Requirement Set → Requirement. The other arrangements don’t reflect how Tosca structures requirements, such as placing a test item or a single requirement above a folder, or placing a folder beneath a requirement.