What must an officer communicate to a subject when obtaining consent to search a residence?

When obtaining consent to search a residence, it is essential for an officer to communicate to the subject that they can revoke consent at any time. This principle is rooted in the concept of voluntariness; consent to search must be freely given, and the individual retains the right to change their mind at any point during the search. Informing the subject about their right to revoke consent reinforces their autonomy and upholds their rights, ensuring that the search remains lawful and respecting any potential privacy concerns.

The other choices do not align with the fundamental standards of obtaining valid consent. For instance, suggesting that the search is mandatory undermines the voluntary nature of consent, while conveying that the subject cannot stop the search once it has begun contradicts their right to revoke that consent. Stating the search will focus only on specific areas may also misrepresent the nature of the consent if not clearly understood, emphasizing the need for transparency about the scope and limits of the search when consent is given.