Answer:
C) a tapeworm and a human
Step-by-step explanation:
A parasitic relationship is defined as the relationship between two organisms in which one organism called parasite fed over other organism called host and parasite get benefits while the host get harmed.
From the given options, relationship between a tapeworm and a human is a parasitic relationship because a tapeworm act as a parasite in human body. Parasite gain food or nourishment while human body loses its nourishment.
Hence, the correct answer is "C) a tapeworm and a human".