The correct answer is (a). The Smart Cities Mission was launched in 2015 by the Government of India. The mission aims to develop 100 smart cities across the country. The mission is based on the principles of citizen participation, sustainability, and innovation. The mission has been implemented through a competitive process, in which cities have been invited to submit proposals for smart city development. The proposals are evaluated by a committee of experts, and the top 100 cities are selected for funding. The mission has been a major success, and has helped to improve the quality of life in many cities across India.
Option (b) is incorrect because the Smart Cities Mission was launched in 2015, not 2016.
Option (c) is incorrect because the Smart Cities Mission was launched in 2015, not 2017.
Option (d) is incorrect because the Smart Cities Mission was launched in 2015, not 2014.