Which of the following best illustrates a request made for legal intervention due to a threat of harm?

A petition is the most appropriate choice for illustrating a request made for legal intervention due to a threat of harm. In legal contexts, a petition is a formal written request to a court, often seeking protective orders, restraining orders, or other forms of judicial relief when an individual feels threatened or is in danger of harm. Individuals may file petitions in cases of domestic violence or threats to ensure their safety and obtain legal protection.

In contrast, a contract involves an agreement between parties and does not inherently seek court intervention for protection. A waiver typically refers to relinquishing a right or claim, which does not align with the need for legal intervention. A deposition is a process in legal proceedings where a witness provides sworn evidence outside of court, primarily used for gathering information rather than for seeking protective measures against harm. Thus, a petition directly addresses the need for legal action in response to a threat.