Explanation:

- Statement 1: Different groups may have different attitudes towards conflict.

- This is correct. Different communities, organizations, or nations often have diverse perspectives on conflict based on their culture and experiences.

- Statement 2: Some groups consider conflict undesirable. Certain other groups have an objective attitude towards conflict. They neither encourage nor discourage it.

- This is also correct. Some see conflict as negative, others view it neutrally.

- Statement 3: The third type of groups is those that consider conflict and resultant social change desirable provided they do not cross certain limits.

- Correct again. Some accept conflict for positive change, as long as it remains within control.

- Statement 4: As a process, conflict and the changes related to it can generally be organised so that these can take a regular systematic form.

- This statement is accurate. Organized conflict resolution can lead to systematic changes.

- Option Evaluation:

- Option 1: Includes statements 1, 2, 3. Incorrect as it misses statement 4.

- Option 2: Includes statements 1, 2, 3, 4. This is the correct option.

- Option 3: Includes statements 1, 3, 4. Incorrect as it omits statement 2.

- Option 4: Includes statements 2, 3, 4. Incorrect as it misses statement 1.