Which one of the following effects of creation of black money in India has been the main cause of worry to the Government of India?

Answer: D. LOSS OF REVENUE TO THE STATE EXCHEQUER DUE TO TAX EVASION is the main worry. BLACK MONEY refers to unaccounted income generated through illegal activities or legal activities concealed from tax authorities. While black money has multiple harmful effects, the GOVERNMENT'S PRIMARY CONCERN in policy terms is the FISCAL HAEMORRHAGE from tax evasion. Why D is the BEST answer: - TAX EVASION DEPRIVES THE STATE of revenues that would fund essential public expenditure (defence, social welfare, infrastructure, education). - Estimates over the years (NIPFP, NIFM, NCAER studies commissioned by the Finance Ministry) have placed the black economy at 20-30% of GDP, implying massive revenue loss. - The government's KEY ANTI-BLACK-MONEY INITIATIVES (Black Money Act 2015, Demonetisation 2016, PMLA amendments, Benami Transactions Act amendment 2016, Income Disclosure Schemes) are PRIMARILY REVENUE RECOVERY-MOTIVATED. - The 2012 White Paper on Black Money tabled in Parliament specifically frames the problem in terms of TAX EVASION AND REVENUE LOSS. Distractors are real but secondary concerns: (A) Real estate speculation — a consequence and distortion, but the policy worry begins with revenue. (B) Investment in jewellery and gold — outcome, not the primary policy concern. (C) Political party donations and regionalism — partly addressed by electoral funding reforms (Electoral Bond Scheme), but not the central worry stated in official documents. UPSC's framing ('main cause of worry to the Government') points specifically at fiscal/exchequer impact. Source: White Paper on Black Money 2012 (Ministry of Finance) / Black Money (Undisclosed Foreign Income and Assets) Act 2015.