C

To determine the correct matches, let's analyze each term based on their physical dimensions or definitions.
(i) Gravitational constant 'G': The dimensions of G are given as \(M^{-1}L^{3}T^{-2}\) (Option (q)).
(ii) Torque: Torque is defined as \(\tau = r \times F\), and its dimensions are \(ML^{2}T^{-2}\) (Option (p)).
(iii) Linear momentum: The momentum p is defined as \(p = mv\) with dimensions \(MLT^{-1}\) (Option (r)).
(iv) Pressure: Pressure is defined as force per unit area, with dimensions given as \(ML^{-1}T^{-2}\) (Option (s)).
Hence, the correct pairings are (i)-(q) (ii)-(p) (iii)-(r) (iv)-(s). Therefore, option C is correct.