The states that whenever the perpetrator of a crime comes into contact with the scene, he or she will both bring something into the scene and leave with something from the scene. In other words, this principle asserts that every contact leaves minimally, a trace of evidence.

The answer is "Locard's principle".

Explanation:

In today's federal authorities, the basic principle is formulated by Locard's principle transfer, it is the basic principle, that is "each touch left a trace", Therefore, after leaving traces, no suspect can leave the area.

In this principle, all carry into the picture and leave the area to something. This theory, in many other words, states that any interaction leaving a residue of proof, superficially.

- Locard's Principle.

Explanation:

The 'Locard's Principle' also known as 'Locard's exchange principle' demonstrates that a perpetrator or culprit involved in a crime will take some objects/things with him/her or leave some things behind him/her when he/she enter or depart the crime scene like hair, blood, DNA, fingerprints, etc. which can further be used as a forensic evidence. He stated that 'every contact leaves a trace' which formulated into his basic principle in forensic science which states that these traces can be used as evidence to investigate the crime and clues to search for the culprit.

in this scenario it would be the consumer demand as most influential in making the decision. the band members need to figure out where and from whom they will make the most money, in other words who out of the two consumer groups - football fans or car drivers - will spend their money, who is more likely to contribute to their cause and buy what they are offering.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.