Answer is: 2) 14/7 N + 4/2 He --> 17/8 O + 1/1 H.
Transmutation is a process that involves a change in the nucleus of an atom. It can be natural or artificial.
This example is the first artificial nuclear transmutation described by Rutherford in 1919.
Artificial transmutation can be expressed by nuclear reaction:
Target Nuclide + Bombardment Particle → New Nuclide + Ejected Particle.