Are intestinal parasites that can live up to 20 years and grow up to 50 feet in length.
a. toxoplasmosis
b. amoebae
c. malaria
d. tape worms

Tapeworm

Tapeworm are known to be parasite by taking their food or nutrients from the host while depriving the host of nutrients. Also, they can live for 20 years, grow up to 50 feet and survive within the guts of animals including human. Furthermore, tapeworm eggs get into the human host from animals through food most especially undercooked meat and contaminated water.

Tapeworms

Explanation: The tapeworms are the worm that is present in the small intestine of the human beings that absorbs the nutrients from it.

They act as parasite residing in the human body.  An adult tapeworm consists of the head, neck and chain of segments. During an infection the tapeworm adheres the walls of intestine and grows their.

An adult tapeworm can grow upto 50 feet in length and survive inside the human body upto 30 years.

helicase, i think thats it