Which of the following is NOT a component of a whorl fingerprint?

In the context of fingerprint classification, a whorl fingerprint includes several key components that help in identifying its specific patterns. The core, delta, and type lines are all integral parts of a whorl pattern.

The core is the center of the whorl where the ridges typically swirl around. Deltas are the points on the fingerprint where ridge lines diverge, and in a whorl, there are usually two deltas present. Type lines are the lines that run along the edges of the whorl, helping to define the boundaries of the fingerprint pattern.

Ridge count, however, is not a formal component of the fingerprint itself but rather a measurement used to determine the number of ridge lines between the core and a delta. This count helps in classification but does not form part of the physical structure of the whorl. Therefore, identifying ridge count as part of a whorl fingerprint is incorrect, making it the right answer for this question.