Rationalism is represented by certain philosophers belonging to Cartesian School such as Descartes, Leibniz and Spinoza. It should be noted that Grotius and Kant also contributed significantly to this philosophical approach as well as they did in the field of IR. However, traditional pragmatism particularly depends on the views of American philosophers such as William James (1842-1910), Charles Peirce (1839-1914) and John Dewey (1859-1952). The correct option is A.