1. Which of the following is considered physical evidence? A) Testimony from an eyewitness B) Fingerprints found at the crime scene C) Suspect's confession D) Security camera footage Answer: B) Fingerprints found at the crime scene Rationale: Physical evidence refers to tangible objects that can be used to establish facts in a case, such as fingerprints. 2. What is the purpose of analyzing physical evidence in a crime laboratory? A) To create a timeline of events B) To identify potential suspects C) To link suspects to a crime scene D) To provide alibis for suspects Answer: C) To link suspects to a crime scene Rationale: The analysis of physical evidence helps to connect suspects to a crime scene through various scientific methods. 3. Which technology is commonly used to examine DNA evidence in crime laboratories? A) Gas chromatography B) Mass spectrometry C) Polymerase chain reaction (PCR) D) X-ray fluorescence Answer: C) Polymerase chain reaction (PCR) Rationale: PCR is a common technology used to amplify and analyze DNA samples in crime laboratories.