The person in charge of a crime scene investigation should never allow a superior officer anxious for information, the presence of the press, or other factors to distract him or her from doing a deliberate and thorough job. In addition to other grounds, this is necessary because.

The correct answer is : The investigator is personally responsible for the operation

Explanation:

An investigator is responsible for supervising investigational agents as well as for the proper handling, storage, and administration of it.  He or she is the one that maintains ultimate responsibility even though it can be delegated to others. It is the responsible leader of the team.

using the scientific method.