Which of the following is a category within the specification sections relevant to construction materials?

The category of "Furnishings" is relevant to construction materials within the specification sections as it encompasses various elements used in interior design and building functionality. This can include items such as furniture, fixtures, and equipment that are essential for the completion of a space and enhance its usability and aesthetic appeal. Specifications for furnishings address material types, finishes, performance requirements, and installation guidelines, which are crucial for ensuring that the furnishings integrate well with the overall design intent and meet the needs of the building's occupants.

In contrast, human resources, financial management, and environmental safety, while important aspects of project development and execution, do not fall under the category of construction materials. Human resources deals with personnel and workforce management, financial management involves budgeting and cost control, and environmental safety pertains to regulations and practices that ensure safe working conditions and sustainable practices.