Which of the following describes a person who may assert rights on behalf of a victim who is incompetent?

The individual who may assert rights on behalf of a victim who is incompetent is the guardian appointed for that person. This choice is correct because a guardian has the legal authority and responsibility to make decisions and advocate for the welfare of individuals who are unable to do so themselves due to incapacity or incompetence. The guardian is responsible for protecting the interests of the vulnerable individual and ensuring that their rights are upheld.

In contrast, while legal counsel can represent a victim in a legal context, the role of a guardian specifically includes the capacity to make personal and welfare decisions on behalf of the incompetent person. Moreover, relationships such as being a relative of the victim do not automatically confer the right to advocate in legal matters unless there is a formal legal appointment. Community volunteers may act in supportive roles or assist with advocacy, but they do not have the same legal standing as a guardian when it comes to asserting rights on behalf of an incompetent individual. Thus, the guardian's role is uniquely positioned to encompass the legal and personal advocacy necessary for someone unable to represent themselves.