Concept: Tapeworm infection is acquired by eating the larval stage present in infected meat.
Explanation: The tapeworm forms a cysticercus, which can remain alive in the muscle tissue of an animal for years.
When a person eats raw or undercooked meat from such an infected animal, the cysticercus is released in the intestine.
There it develops into an adult tapeworm, completing the infection cycle.
Infection cannot occur through breathing or ordinary physical contact.
Fish are not the main source of the tapeworm species referred to in this question.
Therefore, the route of transmission is through the mouth by consuming contaminated meat that has not been properly cooked.
Answer: A. ingesting uncooked meat