Answer: D. Epithelial tissue.
Step-by-step explanation:
Epithelial tissue is the type of tissue that lines the airways in the lungs, including the bronchi and bronchioles. This tissue acts as a barrier, protecting the lungs from foreign particles and microorganisms, and also helps to move mucus and other substances out of the lungs. In the case of lung cancer, it is common for the cancer to first develop in the epithelial tissue lining the airways.