Final answer:
The case described would be considered an unintentional tort.
Step-by-step explanation:
The case described, where a family member sues a nurse for malpractice due to a medication error, would be considered an unintentional tort. Tort law involves civil wrongs, and unintentional torts refer to actions or omissions that result in harm or injury to another person, even though there was no intention to cause harm. In this case, the nurse's medication error caused harm to the client, which is an example of an unintentional tort.