Dr. Pramod Karan Sethi was an orthopedic surgeon who co-invented the Jaipur Foot, a low-cost prosthetic limb. The other options are incorrect: Dr. Kurian is not associated with Space Science (that would be Vikram Sarabhai or others), Dr. Malcom Adiseshiah was an economist, and Dr. Abdul Kalam was known for aerospace/missile work, not Development Economics.