Any person who buys any goods for a consideration which have been paid or promised, or partly paid and partly promised or under any scheme of deferred payment is known as ____________.

Consumer

The correct answer is option (4) : Consumer

The term for any person who buys goods for a consideration which has been paid or promised, or partly paid and partly promised, or under any scheme of deferred payment is known as "4. Consumer." In the context of consumer protection and legal definitions, a consumer is someone who purchases goods or services for  their own use, and this definition aligns with the one provided in the question.