In this procedure, scientists can use cells from an organism to produce an identical copy.
a.) cloning
b.) genetic engineering
c.) artificial selection
d.) gene manipulation

A because using cells to produce organism is cloning

I'm between A and D. Cloning, as obvious as it sounds, is illegal in certain circumstances, so it really depends on just how literal this question is. If it where rated under a completely hypothetical point of view, I would have to go with cloning. I hope that helped.