The correct option is D isograft
Graft is any living tissue that is transplanted from one living being to another. Organs like the kidney, eyes, heart, liver etc. can be transplanted from a donor to a recipient. Grafts can be taken from anyone who is a match to the recipient.
Graft taken from identical twins is called isograft.
Graft taken from anyone other than identical twins is called allograft.
Artificial kidney is a mechanical device used to clean a patient's blood whose kidneys are no longer healthy enough to filter blood and remove waste from the body. This procedure involving an artificial filtering machine is referred to as hemodialysis.