Final answer:
Multiple representation without designated agency in real estate refers to several clients being represented by a single agent without specific assignment.
Step-by-step explanation:
In real estate, 'Multiple representation without designated agency' refers to option B, which means several clients are represented by a single agent without specific assignment. This occurs when a real estate agent works with multiple clients simultaneously, without each client having a designated agent of their own.
For example, if an agent is helping three different clients buy houses without assigning a specific agent to each client, that would be considered multiple representation without designated agency.