According to Nyaya (Classical Indian school of Logic) which means of knowledge (pramana) in used in the following argument - "The world is an effect and hence it must have an efficient cause like all objects e.g. pots, cloth etc. do. That efficient cause is God".

The correct answer is Inference (anumana).
Important PointsAccording to Nyaya, the means of knowledge (pramana) used in the given argument is Inference (anumana).

• Inference is a means of knowledge in Nyaya philosophy that involves drawing conclusions based on reasoning and logical analysis.
• It is a process of reaching new knowledge by connecting the known information or premises with the desired conclusion.

In the provided argument, the reasoning follows the pattern of inference.

• The premise states that the world is an effect, and based on the observation that all objects (like pots, cloth, etc.) have efficient causes, it is inferred that the world must also have an efficient cause.
• The conclusion drawn from this inference is that the efficient cause of the world is God.

Therefore, the means of knowledge used in this argument aligns with the process of inference (anumana) according to Nyaya philosophy.