Edmond Locard created the Theory of Exchange which states: Group of answer choices An aspect of the natural world can be repeatedly tested and verified in accordance with a scientific method. When two or more objects come into contact with one another, a cross transfer of information/materials occurs. The rate at which one currency will be exchanged for another. The act of giving or taking one thing in return for another.

Locard's Exchange Principle, which he developed, is critical for today's law enforcement.  According to this basic idea, "every engagement leaves a trace."As a result, no offender will be able to flee the scene without leaving a trace.