The answer is C. Therapeutic cloning is the use of stem cell to get specific cell type to replace the damaged cell or tissue in the patient. Its aim is to cure the patient not getting a single person. For B, it is artificial insermination, not cloning.
Explanation: The Dracunculus medinensis is a parasite that is often referred to as a roundworm. The answer Nematoda is correct because is is the phylum that classifies roundworms and is greek for "roundworms"