If in the game matrix, there exists an element which is smallest in its row and greatest in its column then this row-column pair is an equilibrium pair. For each row write the lowest element to the right, and for each column write the greatest element below the matrix:

Now, observe that max {-1, 0, 2} = 2 and min {2, 3, 4} = 2. Therefore, (2nd row, 3rd column) is an equilibrium pair. The correct answer is D.