Answer:
Four (4)
Explanation:
The graphs in question make a comparison between two very different countries of economic and social reality: Italy and Niger.
Italy is a developed European country, while Niger is an underdeveloped African country. Developed nations have a lower birth rate, since people have more access to information and contraceptive methods. Likewise, developed countries have a longer life expectancy, since socioeconomic conditions are better. These two information can be seen in Graph 4, where Italy has a higher life expectancy (green column) and lower birth rate (blue column). Finally, in underdeveloped countries the mortality rate is higher. This is also due to the socio-economic differences between the two countries. The mortality rate can be seen on the graph by means of the red column, which represents a higher mortality in the case of Niger.
