Which term describes a person engaged in the law profession?

The term that describes a person engaged in the law profession is "attorney at law." An attorney at law is a licensed individual who is authorized to represent clients in legal matters, provide legal advice, and advocate on their behalf in court. This designation implies that the individual has completed the necessary education, passed the bar examination, and met other requirements to be recognized as a practicing lawyer.

In contrast, while a legal assistant and paralegal play important roles in supporting attorneys, they do not have the authority to practice law or represent clients in court. Legal assistants and paralegals generally assist with tasks such as research, drafting documents, and preparing for trials, but they do so under the supervision of an attorney.

A legal clerk, often working in a court system, may assist judges or court staff but is not typically involved in the practice of law in the same capacity as an attorney. Thus, "attorney at law" is the most accurate and comprehensive term for someone actively engaged in the legal profession.