Cohesion is an extension of :

Answer: Cohesion is an extension of the information hiding concept.

Definition: Cohesion measures how closely related the responsibilities and elements inside a single module are. High cohesion means a module has a single, well-focused purpose.

• Information hiding (encapsulation) hides a module's internal details behind a clear interface.

• Cohesion extends that idea by recommending the hidden internals all serve one coherent responsibility, making the module easier to understand and change.

• High cohesion combined with information hiding improves maintainability, reusability, and testability.

Examples: A highly cohesive module might handle only file input/output; a low-cohesion module might mix file I/O, user interface formatting, and network communication in one place.

Relation to other concepts: Modularity is about partitioning a system into modules; abstraction is about exposing essential features; cohesion specifically concerns how focused the internals of a module are and is best seen as an extension of information hiding.