Comparison tests involving palmar flexion creases were reported by which organization in 1991?

The correct choice is New Scotland Yard, which is significant in the context of forensic science and latent print analysis. In 1991, New Scotland Yard conducted studies and reported findings that focused on comparison tests concerning palmar flexion creases. These creases are important for personal identification purposes as they provide unique patterns on the palms of hands that can be used in various forensic applications, including latent print examination.

New Scotland Yard is the main branch of the Metropolitan Police Service for Greater London. Its commitment to advancing forensic methods, including the study of unique dermatoglyphic features, underscores the importance of palmar flexion creases in identifying individuals. This work, along with the resulting research published in the early 1990s, contributed to a better understanding of how these patterns could help in making precise comparisons in fingerprint analysis.

Other organizations mentioned, such as the FBI and Interpol, have their own extensive research and methods in the field of fingerprints and latent print analysis but did not specifically report on the tests of palmar flexion creases in that particular year.