The study of human population with the help of the records of the number of births and deaths is called

Answer: Option A

Explanation:

The scientific study of birds is called Ornithology.

The correct or accepted pronunciation of words is called Orthoepy.

The method and practice of teaching, esp. as an academic subject or theoretical concept is called Pedagogy.

Answer: Option B

Explanation:

Exercises developing or displaying physical agility and coordination is called Gymnastics.

The science that deals with the earth's physical structure and substance, its history, and the processes that act on it is called Geology.

The study of the microscopic structure of tissues is called Histology.

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 D

Explanation:

The study of bacteria is called Bacteriology.

The study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs is called Astrology.

Cultivation of trees and vegetables is called Arboriculture.

Answer: Option A

Explanation:

The science of the nature of heavenly bodies is called Cosmogony.

The science that describes and maps the main features of the universe is called Cosmography.

The science of the nature, origin and history of the universe is called Cosmology.