Explanation:

- Option 1: The consumer

The consumer cannot file a case because Johar has passed away, making it impossible for him to act on his own behalf.

- Option 2: Any registered consumers’ association

A registered consumers’ association can file a case on behalf of a consumer for issues related to consumer rights.

- Option 3: A legal heir or representative of a deceased consumer

A legal heir or representative can file a case on behalf of Johar since he has passed away, enabling them to act on his behalf.

- Option 4: All of the above

This option would imply that none of the parties can file a case, which is incorrect as explained above.

Your selected option, Option 1, is correct because only Johar, the consumer himself, cannot file after his demise.