The correct answer is Option (2)- Hargobind Khorana

The Nobel Prize in Physiology or Medicine in 1968 was awarded jointly to Robert W. Holley, Har Gobind Khorana, and Marshall W. Nirenberg for their interpretation of the genetic code and its function in protein synthesis.

Explanation:

• Har Gobind Khorana, an Indian-American biochemist, was one of the recipients of the Nobel Prize in Physiology or Medicine in 1968.
• The three scientists played key roles in deciphering the genetic code and understanding how the sequence of nucleotides in DNA instructs the synthesis of proteins.
• Har Gobind Khorana, in particular, made significant contributions to the understanding of the genetic code, and his work paved the way for advancements in molecular biology.

In summary, Har Gobind Khorana was awarded the Nobel Prize in Physiology or Medicine in 1968 for his contributions to the interpretation of the genetic code and its function in protein synthesis.