Tape worm increases in which of the following

Tape worm increases in Small intestine.
A tapeworm in the intestines often causes mild symptoms. Moderate to severe symptoms may include stomach pain and diarrhea. Larval cysts can cause serious disease if they are in a person's brain, liver, lungs, heart or eyes.
The mature tapeworm can only survive inside the host animal, feeding off of the host's nutrients. The head attaches to the inside of your intestines and absorbs nutrients from the food digesting there.