The relationship of data elements in a module is called

Answer: Cohesion

Explanation: Cohesion is the degree to which the elements inside a module (such as data and the routines that operate on that data) are related and work together to provide a single, well-defined purpose.

• Why high cohesion is desirable: modules with high cohesion are easier to understand, maintain, test, and reuse.

• Difference from related terms: coupling describes dependencies between modules, modularity describes the division of a system into modules, and granularity refers to module size or level of detail.

• Example: a module that only handles user authentication (validating credentials, issuing tokens) has high cohesion because its internal data and functions all focus on the single task of authentication.