Question

What are the three main sources of typically finding physical evidence according to Forensic Sciences?

• A. The crime scene; the witness; and the investigating agency
• B. Finger prints; body fluids; and weapons and tools
• C. The body materials; chemical substances; and botanical materials
• D. The crime scene; the culprit; and the victim

Hint:

Remember the "Forensic Triangle" or "Evidence Triangle" which links the Suspect, Victim, and Crime Scene. Physical evidence is the material that connects these three points.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Physical evidence in forensic science refers to any material object that can establish that a crime has been committed or can provide a link between a crime and its victim or its perpetrator. The question asks for the primary sources from where this evidence is obtained.
Step 2: Detailed Explanation:
Let's analyze the options:

(A) The crime scene; the witness; and the investigating agency: Witnesses provide testimonial evidence, not physical evidence. Investigating agencies collect evidence, they are not a source of it.
(B) Finger prints; body fluids; and weapons and tools: These are types of physical evidence, not the sources of the evidence.
(C) The body materials; chemical substances; and botanical materials: These are also categories or types of physical evidence, not the primary sources.
(D) The crime scene; the culprit; and the victim: This is correct. Based on Locard's Exchange Principle, physical evidence is transferred during a crime. Therefore, evidence can be found at:
The Crime Scene: The location where the crime occurred.
The Culprit/Suspect: The perpetrator may carry traces from the scene or victim.
The Victim: The victim may have traces from the culprit or the scene on their person.
Step 3: Final Answer:
The three main sources from which physical evidence is typically collected are the crime scene itself, the body of the victim, and the body or belongings of the suspect/culprit.