Final answer:
The correct answer is C) Low population growth rate, high life expectancy, and diverse industrial economies, representing Stage 4 of the demographic transition model, typical of a developed, postindustrial society.
Step-by-step explanation:
The characteristics of a region characterized by low population growth rate, high life expectancy, and diverse industrial economies align with Stage 4 of the demographic transition model. In Stage 4, both birth and death rates are low, leading to healthier individuals and a longer life expectancy. This stage reflects a postindustrial society that has achieved population stability, where the economy is diversified and not solely dependent on agriculture, but also includes various industrial sectors. Therefore, the correct answer to the provided multiple-choice question is C) Low population growth rate, high life expectancy, and diverse industrial economies.