The harm caused by parasitism to a host organism is the development of new body parts for the parasites. Therefore, choice (c) is right.
What is parasitism to harm the host?
The host is harmed by parasites. We humans typically want to avoid infection at all costs because parasites can bring disease and death in the majority of species.
An interaction between two species known as parasitism occurs when the parasite benefits while the host suffers. These parasites affect the human body and decrease host fitness.
Hence, the significance of the parasitism is aforementioned.
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