The correct answer is (b) Dolly.
Dolly the sheep was the first mammal to be cloned from an adult somatic cell. She was born on July 5, 1996, at the Roslin Institute in Scotland. Dolly was cloned from a mammary cell taken from a Finn Dorset ewe and was born to a Scottish Blackface ewe. She lived for six years and six months before being euthanized due to a progressive lung disease.
The other options are incorrect. Ravi, Gauri, and Sharda are all common Indian names. There is no evidence that any of these people were involved in the cloning of Dolly the sheep.
Dolly’s birth was a major scientific breakthrough. It showed that it was possible to clone mammals from adult cells, which could have implications for the treatment of human diseases. However, Dolly’s death also raised concerns about the ethics of cloning. Some people believe that cloning should not be used to create human beings, while others believe that it could be used to help people with serious medical conditions.