The additional commission paid to agents for guaranteeing payment is?

The additional commission paid to agents for guaranteeing payment is called "del credere". Del credere is a type of commission that is paid by the seller to the agent for guaranteeing payment by the buyer. This commission is usually paid by the seller to the agent when the buyer is new or is not considered financially stable. The del credere commission is an additional fee that the seller pays to the agent in exchange for assuming the risk of non-payment by the buyer. Therefore, is the correct answer.