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The error is in part 'B' and 'D' of the sentence. In part 'B' use of 'have'(plural auxiliary verb) is incorrect and needs to be replaced by singular auxiliary verb 'has'( in 'have revolutionised') as the sentence talks about a single approach. In option 'D' use of 'relevantly more' is contextually incorrect and needs to be replaced by 'more relevant' which suggests that field-work based approach has made economics more relevant in policy making. Hence, the answer is option b).
When was Unified Payments Interface (UPI) launched?
Which ministry is deliberating on the preparation of the Action Plan and Vision Document of India@2047?
Walmart-owned fintech firm PhonePe is investing about $______million to set up data centers in India.
Why did Madhya Pradesh introduce the Drone Promotion and Utilisation Policy 2025?
Which of the following states was NOT ranked in the Top 5 of the Fiscal Health Index (FHI) 2025?
Which location was selected by Vice President Jagdeep Dhankhar in October 2024 for the inauguration of the Meghalaya Skill and Innovation Hub?
Which Indian company is investing ₹10,000 crore in a solar power project in Kurnool, Andhra Pradesh?
Which element is often referred to as the "Stranger Gas"?
What minimum support price (MSP) did the Madhya Pradesh Cabinet set for soybean procurement in 2024?