What is a judicial appointment of a person to manage the affairs of someone deemed incompetent?

The correct answer identifies a guardian as a judicial appointment made to oversee the affairs of an individual who is deemed incompetent. When a court determines that a person is unable to manage their own affairs due to incapacity, it may appoint a guardian to act in their best interests. This guardian is responsible for making decisions related to the personal and financial matters of the individual, ensuring that their rights and needs are fulfilled.

In contrast, an executor refers to a person designated to manage and distribute a deceased person's estate according to their will, which does not apply to individuals considered incompetent. A trustee administers assets placed in a trust for the benefit of another party, again falling outside the context of managing the affairs of someone deemed unable to do so themselves. Lastly, a power of attorney is a legal document that allows one person to act on behalf of another, but it is typically granted voluntarily by someone competent, rather than being appointed by a court due to incapacity. Thus, the role of a guardian is specifically tailored to the situation presented in the question.