What leaves an impression on a surface touched, comprised of oil and amino acids?

The correct answer is a fingerprint. Fingerprints are unique patterns formed by the ridges and valleys on the fingertips, and when a person touches a surface, they leave behind an impression that consists of natural oils and amino acids from the skin. This biological residue creates a distinctive mark that can be used for identification purposes.

Fingerprints are significant in forensic science because they can reveal important information about the individual who left them, and they are often used in criminal investigations to establish identity or presence at a crime scene. Other terms like imprint, marking, and residue may refer to physical marks or substances left on surfaces, but they do not specifically encompass the unique characteristics and composition associated with fingerprints.