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

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 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 B

Explanation:

The study of relation of animals and plants to their surroundings, animate and inanimate is called Ecology.

The study of insects is called Entomology.

The study of inscriptions is called Epigraphy.

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 C

Explanation:

The study of human races is called Ethnology.

The study of animal behaviour is called Ethology.

The study of origin and history of words is called Etymology.