According to Nyaya logic, which of the following statements has a logical flaw because the middle term, instead of proving the existence of the major term in the minor term, proves its non-existence?

The flawed argument is "Sound is eternal because it is produced", where the reason proves the very opposite.

Eternality is claimed of sound on the ground that sound is produced.

Yet whatever is produced is invariably non-eternal, as pots and clay show.

So the middle term is pervaded by the absence of the intended major term, eternality.

Instead of establishing the major term it establishes its contradictory.

A reason that proves the opposite of what is asserted is the viruddha (contradictory) hetvabhasa.