Step 1: Match the meat to the worm. Pork is the key clue, so we need the tapeworm whose larval stage lives in pig muscle.
Step 2: That worm is Taenia solium, the pork tapeworm. Eating undercooked pork containing cysticercus cellulosae lets the larva mature into an adult tapeworm in the human gut. Ingesting its eggs can additionally cause cysticercosis through autoinfection.
Step 3: By contrast, Taenia saginata comes from beef carrying cysticercus bovis, and Trichuris trichiura spreads by the faeco-oral route from soil-borne eggs rather than meat. So the pork-related helminth is Taenia solium.\[\boxed{\text{Taenia solium}}\]