Final answer:
The relevance to the curriculum and learning goals is the primary basis for the selection and use of instructional material, ensuring materials are educationally rigorous and align with learning objectives.
Step-by-step explanation:
The primary basis for the selection and use of any instructional material is C) The relevance to the curriculum and learning goals. When selecting resources, educators consider how well the material aligns with the curriculum's objectives and the specific learning outcomes they aim to achieve with their students. Cost-effectiveness and popularity among students may also be considered, but they do not take precedence over the instructional alignment and educational rigor. The development process of educational material includes feedback from educators and reviewers focusing on a material's clarity, accuracy, student support, and assessment rigor to ensure they contribute effectively to the learning experience.