Question

Scientific study of human population is
A. Ecology
B. Demography
C. Vasectomy
D. Laparoscopy

Answer 1

Hint: The human population is the total number of humans currently living in the world or a particular region. This number of humans in particular regions is used for various surveys and studies. The human population has crossed 7 billion marks around the world.

Complete answer:
Ecology is a branch of science that deals with the interactions between the organisms and their biophysical environment which includes both abiotic and biotic components of life. Pedogenesis, nutrient cycling, primary production, etc are the ecosystem processes.
Demography is the study of statistical representation of population, especially human beings. This study is used to analyze the population of human beings which is used in various surveys and analytics. Sociology includes the field demography which is used in educational institutions.
Vasectomy is a treatment used male sterilization which leads to permanent contraception. During this surgery, the male vasa deferentia are cut and tied which prevent the sperm from entering into urethra which lead to prevention of fertilization.
Laparoscopy is the operation of the abdomen or pelvis using the camera and small incisions. This treatment diagnoses interventions in the abdomen by performing small cuts. This surgery is termed as minimally invasive surgery which is a modern technique of surgery.

Hence, the correct option is B. Demography.

Note: The normal demography is the study of measurement of the population processes while social demography relates the population with the economic, cultural, social and biological processes which influences the population.