When using S297 to remove a person, which partner must be informed?

The correct choice is to inform the local authority when using S297 to remove a person. This requirement is grounded in the legal framework that governs the actions under that specific section. Informing the local authority ensures that they are aware of the situation and can take any necessary actions or measures that involve additional support or resources. It recognizes the proper channels of communication and coordination that are vital in circumstances that involve the removal of individuals, particularly in cases that may pertain to welfare or safeguarding matters.

Communication with other entities, such as a person's closest friend, is generally not mandated under this section and does not carry the same legal obligation as involving the local authority. The police department and community services play important roles in public safety and community support, but the primary responsibility to be notified under S297 lies with the local authority, which governs local services and welfare issues pertinent to the individual being removed.