According to the Demographic Transition Model, which stage is characterised by both high birth rates and high death rates, resulting in slow population growth?

Stage 1 of the Demographic Transition Model is the pre-industrial stage, where both birth rates and death rates are high and fluctuating, resulting in a slow or stationary population growth. Stage 2 is marked by falling death rates while birth rates remain high, Stage 3 by falling birth rates, and Stage 4 by low birth and death rates.