Question

Which of the following method is considered as the most basic and least accurate form of crime scene mapping?

• A. Triangulation
• B. Rectangular coordinate
• C. Base line
• D. Polar/grid coordinate

Hint:

\textbf{Triangulation} and \textbf{Rectangular Coordinates} are the workhorses of crime scene sketching due to their accuracy and reliability. The \textbf{Baseline} method is a simpler variation of the rectangular method using only one reference line.

Answer 1

The Correct Option is D

Step 1: Understanding crime scene mapping methods
- Triangulation: Uses two fixed reference points to measure evidence location. More accurate for irregular scenes.
- Rectangular coordinate: Uses x-y grid system (right angles). Common and fairly accurate for indoor scenes. 
- Base line: Establishes a straight line and measures perpendicular distances. Useful in outdoor/large scenes. 
- Polar/Grid coordinate: Uses an angle and distance from a single reference point. Simplest, but least precise because small angle errors lead to big location errors. 

Step 2: Identify least accurate
Since the polar/grid coordinate method depends on angular measurement, it is prone to errors and is considered the most basic and least accurate. 

Final Answer:
\( \boxed{\text{Polar/Grid coordinate}} \)