Which of the following indicates a rapid population growth?

A high birth rate is a strong indicator of rapid population growth. When the number of births in a population significantly exceeds the number of deaths, it leads to an increase in the total population. High birth rates are often found in developing countries where factors such as cultural norms, lower access to family planning, and a higher desire for larger families contribute to more children being born.

In contrast, options such as a high death rate, natural decrease, and stagnant population reflect situations where population growth is either minimal or negative. A high death rate would typically suggest that more people are dying than being born, which does not promote growth. Natural decrease occurs when the death rate surpasses the birth rate, leading to a decline in population. Stagnant population refers to a scenario where the population size remains relatively constant, neither growing nor declining. Thus, a strong birth rate is a fundamental driver of rapid population expansion.