Step 1: Concept
The term "management" can be viewed from different perspectives, one of which is as a "noun" or a "group" representing the collective body of personnel.
Step 2: Meaning
When used as a collective noun, management refers to all those people who perform the functions of management in an enterprise.
Step 3: Analysis
• Only the CEO represents a single individual at the top tier, which does not constitute the entire managerial group.
• Employees of the organisation is too broad, as it includes non-managerial operative workers who do not direct or control tasks.
• Administrative staff typically handle routine clerical and support duties rather than core managerial decision-making.
• All individuals managing organisational tasks accurately describes the collective group—from top executives down to first-line supervisors—who are responsible for guiding and directing the organization's activities.
Step 4: Conclusion
Therefore, management as a group encompasses everyone actively involved in managerial tasks.
Final Answer: (D)