Correct option is A
According to W.W. Rostow's model of economic development, the stages are chronologically arranged as follows:
1. Pre-take-off stage - The economy is predominantly agricultural and the process of building up the conditions necessary for growth is underway.
2. Take-off stage - Rapid growth is achieved in a few leading sectors, such as textiles or heavy industries, thanks to the emergence of new industries and the expansion of existing ones.
3. Age of maturity - The economy diversifies; industries that use more advanced technology and require less unskilled labor begin to dominate.
4. Age of high mass-consumption - The economy shifts from production of heavy industry, such as steel and energy, to consumer goods and services, marking the development into a society with high living standards.
The correct chronological order is (a) B, D, C, A.