Concept:A merchant wholesaler is an intermediary that buys goods outright, takes ownership or title, and resells them, usually to retailers.
Explanation:The options are different types of intermediaries.
A del-credere agent, a broker, and a factor are all agents who act on behalf of another person; they do not take title to the goods.
A rack jobber, however, actually purchases goods, takes title, and supplies them to retailers, often arranging display racks.
Therefore, the merchant wholesaler among the options is the rack jobber.
Answer:C. rack jobber