Explanation:

- The phrase "scientific study of mind and behaviour" refers to understanding how humans think, feel, and act.

- Answer: Psychology

- ?? Psychology is the correct choice. It is the scientific study of the mind and behavior.

- Philosophy: Focuses on fundamental questions about existence, knowledge, values, and reason. It isn't confined to the scientific method.

- Astrology: Involves the belief that celestial bodies influence human affairs, not a scientific study of mind and behavior.

- Neurology: Studies the nervous system, primarily the brain. It is more biological than psychological in focus.