Answer:
The correct answer is - option A) the secular trend.
Explanation:
The secular trend is the constituent of the time period that provides the general tendency of the particular data for a long time of a period. It is the phenomenon.
The growth of the population in a particular area over a period of time is a good example of a secular trend. In the given question trend is moving with every generation by generation and become taller.
Thus, the correct answer is - option A) the secular trend.