<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:An investigator is conducting a study to document the histological changes in the respiratory tree of a chronic smoker. He obtains multiple biopsy samples from the respiratory system of a previously healthy 28-year-old man. Histopathological examination of one sample shows simple cuboidal cells with a surrounding layer of smooth muscle. Chondrocytes and goblet cells are absent. This specimen was most likely obtained from which of the following parts of the respiratory system?? A: Respiratory bronchiole, B: Terminal bronchiole, C: Conducting bronchiole, D: Alveolar sac, E: Main stem bronchus,  <response>: This is a question about identifying which part of the respiratory system a histological sample comes from based on the cell types present. The key details are that the sample contains simple cuboidal epithelial cells and a layer of smooth muscle, but no chondrocytes or goblet cells. Simple cuboidal epithelium with some smooth muscle suggests one of the smaller bronchioles. The lack of chondrocytes rules out larger airways like the main stem bronchi, while the lack of goblet cells indicates this is not a conducting bronchiole. Therefore, the sample likely comes from a terminal bronchiole.B: Terminal bronchiole 