Answer: c. The population is increasing significantly
Explanation: The birth rate is the amount of live births per 1,000 people in a year or period. The death rate is the amount of deaths per 1,000 people in a population in a year. If we substract the death rate (15) from the birth rate (40) we obtain the rate of natural increase. The rate of natural increase in the example is 25 what neans that the population is increasing significantly.