Answer:
Pablo's grandparents' home country is in Stage 3 of the demographic transition model.
Step-by-step explanation:
Stage 1; is not correct because in this stage the mortality rates are very high, and the fertility rates are also very high.
Stage 2: is not correct because in this stage the mortality rates are still relatively high, while the fertility rate is the highest.
Stage 3: is correct because in this stage the mortality rate is at a medium level, thus declining, while the fertility rates have declined but are still on a good level.
Stage 4: is not correct because in this stage the mortality rate and the fertility rate are both relatively low, they equalize at the end of this stage, and the population stagnates or has just a very small growth.