Answer:
C.
Bohr’s model showed that electron orbits had distinct radii.
Step-by-step explanation:
Bohr’s atomic model stated that electrons move in definite orbits. Electron shells are quantized. Electrons could move in the 1st, 2nd, 3rd shell etc. As electrons move in definite orbits they are at distinct distance from the nucleus. Thus each orbit has a distinct and different radii from the nucleus of the atom.