The use of genetically altered livestock, such as cows, goats, pigs, and chickens, to produce medically useful products is referred to as
selective breeding
artificial selection
farming
pharming

The use of genetically altered livestock, such as cows, goats, pigs, and chickens, to produce medically useful products is referred to as pharming. The correct option among all the options that are given in the question is the fourth option or the last option. I hope that the answer has come to your help.