Concept:Middlemen are intermediaries in the chain of distribution who help move goods from producers to final consumers.
Explanation:Middlemen include wholesalers and retailers.
They buy goods in large quantities from producers.
Then they sell these goods in smaller quantities to consumers.
This function of dividing large consignments into smaller units is called breaking the bulk.
They do not provide research facilities, purchase raw materials, or design the product.
These activities belong to the producer or manufacturer.
Answer:The middlemen is responsible for breaking the bulk.
Therefore, the correct option is D.