Which of the following arrangements is NOT plausible for dealing with unanticipated incapacity?

The arrangement that is not plausible for dealing with unanticipated incapacity is a non-durable power of attorney. A non-durable power of attorney is effective only while the principal is mentally competent. If the principal becomes incapacitated, this type of power of attorney becomes void and cannot be used to manage the principal’s affairs.

In contrast, revocable living trusts, springing durable powers of attorney, and joint tenancies are all strategies that can effectively address situations involving incapacity. Revocable living trusts allow for the management of assets by a trustee if the grantor can no longer do so due to incapacity. Springing durable powers of attorney specifically become effective upon the occurrence of a certain event, such as the principal’s incapacity, allowing for the designated agent to make decisions on their behalf. Joint tenancies allow co-owners to manage property together, which can provide some level of continuity in management should one owner become incapacitated. Thus, only the non-durable power of attorney fails to provide the necessary framework for handling unanticipated incapacity.