Which of the following refers to a course that must be completed before enrolling in another course?

The term that describes a course that must be completed before enrolling in another course is prerequisite. A prerequisite acts as a foundational requirement ensuring that students possess the necessary knowledge or skills before tackling more advanced subject matter. This helps maintain a structured learning progression, allowing educators to ensure that all students are adequately prepared for subsequent courses.

For example, a foundational mathematics course might be a prerequisite for an advanced calculus class, ensuring that students have mastered basic mathematical principles before moving on. This structure is critical in maintaining an effective educational framework that aligns with the demands of more advanced studies.

Other terms, such as corequisite, refer to courses that can be taken simultaneously with another course, while electives are optional courses that allow students to explore interests outside of their major. Supplementary courses, on the other hand, provide additional assistance or support on a subject but do not serve as a prerequisite to advance to higher coursework.