What level of completion is required for economic housing?

The correct answer reflects the requirement for economic housing to be complete based on specifications. This means that the housing unit must meet specific standards and be fully finished to ensure it meets safety, livability, and usability criteria. Economic housing projects are typically designed to provide affordable and functional living spaces that adhere to established building codes and regulations.

When housing is described as "complete based on specifications," it indicates that the structure has been built following detailed plans that ensure all necessary features, such as plumbing, electrical work, and mechanical systems, are fully installed and operational. This level of completion is crucial for the health and safety of future occupants and ensures that the housing can serve its intended purpose effectively.

In contrast, the other options refer to various incomplete stages of construction, which do not meet the requirements necessary for it to qualify as economic housing. A shell house with just doors and windows lacks the internal finishes and systems needed for occupancy. Rough completion suggests that only basic framing and potentially some initial installations are done, with many finishing touches yet to be completed. A half-finished structure would not comply with economic housing standards, as it implies significant uncompleted aspects that could affect safety and livability. Therefore, the complete specification option provides the necessary assurance of quality and functionality expected