Final answer:
Testimonial evidence is gathered from individuals using investigative techniques such as interviewing, interrogation, and honesty tests.
Step-by-step explanation:
The type of evidence that is gathered from individuals using investigative techniques such as interviewing, interrogation, and honesty tests is Testimonial evidence. Testimonial evidence is based on the statements and accounts provided by individuals who are involved in or have knowledge of a particular event or situation. It can include statements made during an interview, information obtained through interrogation, and the results of honesty tests.