Concept:A del credere agent is an agent who guarantees the principal against loss from credit sales to buyers.Explanation:Such an agent sells goods on credit on behalf of the principal.In return for an extra commission, called del credere commission, the agent promises to pay the principal if the buyer defaults.This means the agent takes responsibility for the buyer's failure to pay.Therefore, the description in the question matches the del credere agent.Answer: B. del credere agent