Step 1: Understanding the question.
The question asks about the originator of the concept of standardisation in business activities.
Step 2: Analyzing the options.
- Koontz: Koontz contributed significantly to management theory, but not specifically to the concept of standardisation.
- Maslow: Maslow is famous for the hierarchy of needs theory, which is unrelated to standardisation.
- F.W. Taylor: F.W. Taylor, known as the father of scientific management, emphasized standardisation in work methods to improve efficiency.
- Henry Fayol: Fayol contributed to management theory but did not specifically define standardisation in the context given.
Step 3: Conclusion.
The correct answer is F.W. Taylor, as he introduced the concept of standardisation in management to improve efficiency and effectiveness.
Final Answer:
\[
\boxed{\text{The correct answer is (3) F.W. Taylor.}}
\]