The technique of communication by signs made with the fingers is called

Answer: Option B

Explanation:

The science dealing with the structure of animals, plants or human body is called Anatomy.

The study of history of a list of books on a subject is called Bibliography.

The science that deals with the origin, physical and cultural development of mankind is called Anthropology.

Answer: Option A

Explanation:

The study of effect of environment on workers is called Ergonomy.

The science of improving a human population by controlled breeding to increase the occurrence of desirable heritable characteristics is called Eugenics.

The study of heredity and the variation of inherited characteristics is called Genetics.

Answer: Option D

Explanation:

The study of finger prints for the purpose of identification is called Dactylography.

The branch of biology concerned with the structure and function of plant and animal cells is called Cytology.

The branch of physics dealing with the production and effects of very low temperatures is called Cryogenics.

Answer: Option A

Explanation:

The study of sound is called Acoustics.
The science or art of flight is called Aeronautics.
The philosophy of fine arts Aesthetics.
The science of soil management is called Agronomy.

Answer: Option C

Explanation:

The art of beautiful handwriting is called Calligraphy.

The art of making objects from clay is called Ceramics.

The study of historical records to establish the dates of past events is called Chronology.