Answer
C. population growth
Population growth refers to the change of the number of
population living in a certain area in a specific period of time. The formula used to measure whether there is
a growth in population is birth rate + immigration minus death rate +
emigration. The results after determining whether there is a population growth
will be used by businessmen in deciding whether to invest or not in specific
businesses. The population growth can either be fast or stagnant depending on
several factors.