Final answer:
The primary purpose of Edhesive is to serve as an online learning platform, focusing on computer science and STEM fields, and offering courses for high school students and educational resources for teachers.
Step-by-step explanation:
The primary purpose of Edhesive is C. Online Learning Platform. Edhesive provides comprehensive, tech-based curriculum and teaching resources designed to foster computer science and STEM (science, technology, engineering, and mathematics) skills among students. It offers a variety of online courses, including Advanced Placement (AP) courses, supporting high school students and educators by providing materials which are easily integrated into classrooms or used for independent study.