Solution

The Correct Answer is Option 2: A, B and D Only

Key Points

Explanation of Cohesion Types:

• Functional Cohesion: ✅ This is the highest form of cohesion. It occurs when components of a module work together to achieve a single, well-defined purpose. It is better than Procedural Cohesion.
• Sequential Cohesion: ✅ This occurs when components are grouped because the output of one serves as input to another. This is also better than Procedural Cohesion.
• Temporal Cohesion: ❌ This occurs when components are grouped based on their execution time, like initialization tasks. It is not better than Procedural Cohesion.
• Communicational Cohesion: ✅ This occurs when components operate on the same data or contribute to the same output. It is better than Procedural Cohesion.
• Logical Cohesion: ❌ This occurs when components perform similar tasks based on control logic, such as a switch statement. It is not better than Procedural Cohesion.

Additional Information

• Procedural Cohesion: This occurs when components are grouped to perform a series of procedural steps, often without a clear focus on a single task. It is considered weaker than Functional, Sequential, and Communicational Cohesion.
• Higher cohesion is desirable in software design as it leads to better maintainability, readability, and modularity.

Hence, the correct answer is: Option 2: A, B and D Only