In a class diagram, which concept illustrates the relationship between students and lecturers?

The relationship between students and lecturers in a class diagram is typically represented using associations, which illustrate how different classes interact with each other. Option B likely depicts an appropriate association that shows this relationship, such as a one-to-many or many-to-many connection, which indicates that one lecturer can have multiple students, and one student may engage with multiple lecturers.

In class diagrams, these relationships are important because they help define how entities (in this case, students and lecturers) relate in a system. The actual nature of the relationship—whether inheritances, compositions, or simple associations—is critical for accurately modeling the domain being represented. Understanding this representation allows for clearer communication of the system's design and functionality among stakeholders.

In contrast, the other options may illustrate different relationships or concepts that do not accurately reflect how students and lecturers are related in this educational context. Therefore, identifying the right relationship in these diagrams is essential for the clarity and effectiveness of the system design.