The correct choice is (d) Grand work
To explain: Major work – The work costing more than Rs.22 lakhs is termed as Major work, and the estimate for such work is known as Major estimate.
Minor work – The work costing more than Rs.50000 but not exceeding Rs.2 lakh is termed as Minor work, and the estimate for such work is known as a minor estimate.
Petty work – The work whose cost does not exceed Rs.50000 is termed as Petty work, and the estimate for such work is known as Petty estimate.