What crime has Clara committed by lying about her age during witness testimony?

The correct identification of the crime committed by Clara pertains to perjury. Perjury is the act of intentionally providing false information while under oath, particularly during witness testimony. Since Clara lied about her age while giving testimony, this lie constitutes perjury because it involved a willful attempt to mislead the court and undermine the judicial process. In legal terms, when someone swears to tell the truth and knowingly provides false information, they violate laws pertaining to the integrity of witness statements.

Understanding the nature of perjury is critical, as it directly addresses issues of trustworthiness and the importance of accurate testimony in legal proceedings. While other options like fraud, witness tampering, and obstruction of justice involve deceit and manipulation related to legal processes, none directly correspond to the act of lying under oath in a witness context as perjury does.