In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
I (has been) fortunate to travel with interesting co-passengers
97% of the total debt of all state power distribution companies has been covered till June 2017 under the ‘UDAY’ scheme. What does ‘D’ standfor in ‘UDAY’?