Har Gobind Khorana was awarded Nobel Prize in the field of ______.

The correct answer is Option (1) → Medicine

Har Gobind Khorana was awarded the Nobel Prize in Physiology or Medicine in 1968. He shared the prize with Marshall W. Nirenberg and Robert W. Holley for their work on deciphering the genetic code, which showed how the order of nucleotides in nucleic acids controls the cell's synthesis of proteins.