Answer:
Cysticercus
Explanation:
Cysticercus is known as the larval form of tapeworm. The structure of cysticercus comprises of a sac filled with fluid. Since tapeworm is a parasite, its larva is found within the tissue of the host.
The larva of tapeworm is also harmful as a full grown adult as it causes cysticercosis in humans which causes mild abdominal symptoms and infection that causes passage of proglottids in the stool
This looked familiar to something I’ve done.
Answer:
The third option is correct.
Hope this helps.