Final answer:
A transactional audit assesses the environmental risks and liabilities of land or facilities prior to a property transaction.
Step-by-step explanation:
The type of audit that assesses the environmental risks and liabilities of land or facilities prior to a property transaction is B. Transactional audit.
A transactional audit focuses on analyzing the financial records and transactions of a company or property. In the context of environmental risks and liabilities, a transactional audit would assess any potential environmental issues, such as pollution or contamination, that may affect the value or legal status of the property.