The correct option is 1, 2, and 3 because Mission Sudarshan Chakra encompasses a comprehensive strategy to bolster India's air defence and ballistic missile capabilities while ensuring a robust framework for security across the nation. The emphasis on rapid and precise defensive measures aligns with India's strategic policy of self-reliance and autonomy in military affairs. Additionally, the initiative's goal to create a nationwide security shield by 2035 reflects the commitment to enhance public safety and national security, which is critical for a country facing multifaceted security challenges. This multidimensional approach is essential for UPSC Prelims, given its focus on India's defense capabilities and strategic initiatives.