Discussion
The triradii, which are not actually present in a fingerprint but their potential formation is predicted (beyond the boundary of ridged skin) by the character of the pattern, are termed as :
Answer: A
Such triradii are called extralimital triradii.
A triradius is the point where three ridge systems meet. Sometimes the pattern of the ridges shows that a triradius would form, but it lies beyond the edge of the ridged skin and so does not actually appear on the print. Dermatoglyphics calls such a predicted but absent triradius extralimital, literally 'outside the limit'.
The other terms do not describe this. A triradius that is present is simply a triradius, and 'conjoint', 'super' and 'phantom' triradii are not the standard name for one lying outside the ridged area.
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