1934 नंतर क्रांतीकारी संघटना जवळ जवळ प्रभावहीन झाल्या कारण

The correct answer is Option D (There was no centralised leadership to guide the revolutionaries.).

Key Points:
• Decline of Revolutionary Nationalism After 1934:
• By 1934, most of the iconic second-generation revolutionary leaders were lost: Chandrashekhar Azad was martyred (1931), Bhagat Singh, Sukhdev, and Rajguru were executed (1931), and Surya Sen (Masterda of Chittagong Armoury Raid) was hanged in January 1934.
• Following the elimination and arrest of these stalwarts, the revolutionary groups suffered from a critical absence of an all-India centralised leadership capable of guiding, uniting, and strategizing further actions.
• Without a cohesive central leadership and structure, the dispersed revolutionary groups disintegrated, with many surviving revolutionaries subsequently joining the Communist Party, Congress Socialist Party, or mainstream Gandhian mass movements.
• Key Takeaway: After the martyrdom of key figures like Bhagat Singh and Surya Sen by 1934, the lack of central leadership made revolutionary groups ineffective.