What type of consent must be obtained in writing during a transaction?

In the context of transactions where consent is required, intermediary consent is pivotal because it involves a third party facilitating the agreement between two primary parties. This form of consent generally must be documented in writing to ensure clarity and accountability, particularly in situations where legal obligations are enforced. Written intermediary consent helps to protect the interests of all parties involved in the transaction by providing a clear record of permission and understanding.

While verbal consent can be helpful in certain informal scenarios, it may lack the reliability needed for formal transactions. Implied consent is the assumption that permission has been granted based on actions rather than direct communication, and it does not typically provide the concrete assurance required in transactional situations. Informed consent, while often relevant in contexts like healthcare, refers specifically to a person's agreement after being provided with all pertinent information, and it also does not necessarily relate to the role of intermediaries in transactions.

The necessity of written documentation in intermediary consent is essential to prevent misunderstandings and ensure that all parties have a clear agreement on the terms and responsibilities being undertaken.