c
Electronic configuration of carbon \(\left(^{6} \mathrm{C}\right)\) is \(1 s^{2} 2 s^{2} 2 p^{2} .\)

The electronic configuration of silicon \(\left(_{14} \mathrm{Si}\right)\) is \(1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{2}\)

Hence, the four bonding electrons of \(\mathrm{C}\) and \(\mathrm{Si}\) respectively lie in second and third orbit.