Answer: 1. A) when they are torn
Explanation:
An individual evidence is the one which exhibit the wear and use patterns which can give details for a particular ownership.
Among the options given the fibers considered individual evidence when they are torn. This is because of the fact that the torn fiber indicates that it's other part will be available at some place which can be linked and the ownership of the fiber can be determined.
Answer: 2. C) Secure the scene, take photographs, take notes, search for evidence, collect evidence, send evidence to the laboratory for testing.
A crime scene is required to be handled carefully so as to maintain the integrity and reliability of the evidences. The following are the sequence of events followed at the scene of crime.
Securing the scene: The crime scene should be secured so as to avoid the entry of unwanted individuals who can destroy the available potential evidences.
Take photographs: The photographs should be taken as soon as possible after securing the crime scene. The photographs can be used to record the scene of crime in it's original form. It will help in recognizing the position of the potential evidences at the scene of crime.
Take notes: Notes about the time of visit, place and position of the evidences and condition of the crime scene should be recorded.
Search for evidence: The crime scene should be searched for evidences so as to make them a potential sword against the culprit.
Collect evidence: The evidences should be collected from the scene of crime with utmost care so as to prevent the inclusion of the contaminants.
Send evidence to the laboratory for testing: The experimental chemical and physical analysis of the collected evidences can help in making up expert testimony which can be used against the culprit in the court of law.