Out of the following who cannot file a complaint on behalf of an aggrieved person in the consumer court:

Neighbour of a deceased consumer

The correct answer is option (4)- Neighbour of a deceased consumer.

As per Consumer Protection Act 2019, a neighbor of a deceased consumer does not have the legal standing to file a complaint on behalf of an aggrieved person in the consumer court.

A complaint before the appropriate consumer forum can be made by:
(i) Any consumer;
(ii) Any registered consumers’ association;
(iii) The Central Government or any State Government;
(iv) One or more consumers, on behalf of numerous consumers having the same interest; and
(v) A legal heir or representative of a deceased consumer.