Final answer:
In a civil claim against a paramedic, Negligence must be proven, which involves showing that the paramedic failed to perform their duties to the standard expected, resulting in harm or damage.
Step-by-step explanation:
If there is a civil claim against a paramedic, the correct option that must be proven is D) Negligence. Negligence in a legal sense implies that the paramedic failed to take proper care in doing something, leading to someone else getting harmed. To establish negligence, a plaintiff must show that the paramedic owed a duty of care, breached that duty, and directly caused injury or damage as a result of that breach.
Misfeasance also involves a breach of duty, but it refers to improper performance of a lawful act, whereas negligence does not specify whether the action was lawful or not. Malfeasance, which is the commission of an unlawful act, especially by a public official, and libel, a written defamation, are not relevant terms in the context of a paramedic's professional conduct in most cases.