Utah Special Function Officer (SFO) Practice Exam

What is classified as biological circumstantial evidence?

1. Footprints

2. Tire tracks

3. Blood

4. Paint

The correct answer is: Blood

Biological circumstantial evidence refers to physical evidence derived from living organisms that can provide insights into a crime or investigation. Blood is a prime example of this type of evidence as it can link a suspect or victim to the scene of a crime, establish the presence of a person, and even provide DNA information that can identify individuals. In contrast, the other options do not fall under the category of biological circumstantial evidence. Footprints and tire tracks are examples of impression evidence, as they relate to physical patterns left by objects rather than biological materials. Paint, likewise, is often classified as trace evidence, as it can indicate vehicle involvement or transfer but lacks the biological component essential to categorizing it as biological circumstantial evidence. Thus, blood is accurately identified as the correct response due to its fundamental role in forensic investigation involving living organisms and its potential for providing critical links in a case.