ASIS International (ASIS) Professional Certified Investigator Practice Exam

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Which of the following describes a fingerprint that makes a circular pattern?

Whorl
Loop
Arch
Radial

The correct answer is: Whorl

A fingerprint that forms a circular pattern is accurately described as a whorl. Whorls are characterized by circular or spiral patterns that make complete circles within the fingerprint. This type of ridge pattern consists of at least two deltas and can be further classified into various subcategories based on the specific arrangement of ridges, including plain whorl, central pocket loop, double loop, and accidental whorl. The other options describe different fingerprint patterns. Loops exhibit a pattern that flows in and out on the same side, creating a more elongated form rather than a circular one. Arches present as ridges that enter on one side and exit on the opposite side without any concentric circles or loops. The term "radial" refers to a specific type of loop that opens towards the thumb, and while it has a circular aspect, it does not form a complete circular pattern as a whorl does.