In which of the following arguments the reason is counterbalanced by another reason as per classical Indian school of logic (Nyay)?
A. All things are non-eternal, because they ae knowable
B. Fire is cold because it is a substance
C. Sound is eternal because it is produced
D. Sound is a quality because it is visible
Choose the correct answer from the options given below:

Correct option is D

(d) B and D only
In classical Indian logic (Nyaya), an argument can be counterbalanced by another reason if the reason given for a conclusion contradicts a widely accepted principle or is inherently flawed. 
B. Fire is cold because it is a substance: This argument is counterbalanced by the fact that the essential property of fire is heat, not coldness, making the reasoning inherently contradictory.
D. Sound is a quality because it is visible: This argument is counterbalanced by the fact that sound is auditory, not visual. Visibility does not logically support sound being a quality, which is primarily perceived by hearing.
Information Booster:
Nyaya Philosophy: Focuses on logical reasoning and epistemology, emphasizing the systematic development of argumentation.
Counterbalanced Reason: Involves an argument where the given reason is flawed or contradicted by another established fact.
Valid Reasoning: Essential in forming logical arguments that are consistent with established principles and observable phenomena.