Bertillon system is

A. Dactylography
B. Poroscopy
C. Anthropometry
D. Ridgeology.

Answer: C. Anthropometry.

Explanation:

Dactylography: study of the impressions of patterns formed by the papillary or epidermal 

                            ridges of the fingertips. 

Poroscopy: study of the pores on the ridges, formed by mouths of ducts of sub-epidermal 

                    sweat glands.

Ridgeology: study of friction ridges which are composed of the edges of ridge units which 

                      vary in size, shape and alignment.

Anthropometry: 

• It is based on the principle that after the age of 21 years, the dimensions of the skeleton remain unchanged and also that the ratio in size of different parts to one another varies considerably in different individuals.
• This is applicable only to adults.
• It was first used by the French police officer, Alphonse Bertillon for identification of individuals and criminals.