Answer:
demographic trends
Step-by-step explanation:
Demographic trends -
Demography refers to the study of structure , size , distribution of the population , is referred to as demographic trends .
It is a type of statistical study , specifically humans .
All the trends about the human population is known as demographic trends .
Various factors like , life death , migration , aging etc. , is included in the demographic trends .
Hence , from the given scenario of the question ,
Then correct answer is demographic trends .