Final answer:
The blind pouch located at the beginning of the large intestine, inferior to the ileocecal valve, is known as the cecum. The appendix is attached to the cecum and may have an immunologic function.
Step-by-step explanation:
At the beginning of the large intestine is a blind pouch, inferior to the ileocecal valve, known as the cecum. The correct answer to the student's question is: c) Cecum. The cecum is a sac-like structure that is about 6 cm long and is located at the junction where the ileum of the small intestine ends and the large intestine begins. The appendix, or vermiform appendix, is a small, coiled tube that is attached to the cecum. Although its precise function in humans is not fully understood and it is considered to be a vestigial organ, the appendix contains lymphoid tissue that may play a role in immunity and serves as a bacterial reservoir to repopulate the enteric bacteria following certain illnesses.