Fingerprint patterns can be subdivided into 3 general groups of patterns...

• A. Arch
• B. Spiral
• C. Loop
• D. Whorl

Answer: (B)

Fingerprints are classified into three general pattern types: arch, loop, and whorl. Arches rise in an arc and exit on the opposite side without a delta or true core. Loops have a single delta and a core, with ridges entering and exiting on the same side. Whorls feature two or more deltas and a circular or spiral arrangement around a core. Spiral is not a standard primary category in this three-group system, so it does not represent one of the main pattern types.