Answer
(c)
Work Step by Step
The degree of freedom is the number of rows minus one multiplied by the number of columns minus one, hence: $df=(r-1)(c-1)=(4-1)(2-1)=3$.
The P-value can be obtained from the row $df=3$ containing the value $X^2=325.459$, thus $P\lt0.0005$. Thus the answer is (c).