Which type of agent is not bound to one specific transaction or client?

A general agent is not bound to one specific transaction or client because they have broad authority to act on behalf of the principal in various matters. This type of agent is typically involved in an ongoing relationship where they can make decisions and take actions related to multiple transactions or a wide range of tasks within the scope of their authority.

In contrast, a single agent represents one client in a specific transaction, and a special agent is appointed for a particular transaction or task, which limits their authority to that specific situation. A sub-agent, on the other hand, acts on behalf of another agent in a specific transaction, which also ties them to specific duties and responsibilities. Therefore, a general agent’s broader role and authority over multiple dealings define their ability to operate independently of any one transaction or client, which makes that choice the correct answer.