Step 1: Count electrons
Each N atom has 5 valence electrons. To reach 8, each needs 3 more, so three pairs are shared.
Step 2: Assign overlap
The three half-filled p orbitals on one atom pair with the three on the other: one pair along the axis (sigma) and two pairs sideways (pi).
Step 3: Conclusion
So the bond is a triple bond with p-p overlap. Single and double bond options undercount the shared pairs, so (A), (B), (D) are out.
Final Answer:
Option (C).
\[ \boxed{\text{Triple bond, p-p overlap}} \]