The statement "This happens when the birth rate is more than the death rate between two points of time" describes: Positive Growth of Population

The reason for the choice of "Positive Growth of Population" is as follows:

When the birth rate is more than the death rate over a specific period, it means that there are more individuals being born (new additions to the population) than there are individuals dying (subtractions from the population).

This net increase in the population due to a surplus of births is what characterizes positive population growth. It indicates that the population is growing in size.

Positive population growth is a fundamental concept in demography and is a common scenario in many growing or developing populations. It typically leads to an expanding population if sustained over time.

Therefore the correct option is [4].