Which of these methods is not solely applicable to biological classifications?

a.) whittaker’s classification
b.) cladistics
c.) linnaeus’s classification

"Cladistics" is the one method among the the choices given in the question that is not solely applicable to biological classifications. The correct option among all the options that are given in the question is the second option or option "B". I hope that the answer has actually come to your great help.

It helps someone to concentrate..on something.