Question

what would be the best method to develop a fingerprint on: cigarette butt

Explanation:

Ninhydrin reacts with amino - acids present in sweat residues of fingerprints. Cigarette butts are porous and absorbent, and ninhydrin is effective on such porous surfaces for fingerprint development. Superglue fuming is better for non - porous surfaces, and magnetic dusting is more suitable for smooth, non - porous surfaces.

Answer:

ninhydrin