Question

diagram with label b (cells/tissue) and options: none of these, absorbs nutrients, traps dust and pathogens, secretes hormones, secretes mucus

Explanation:

The diagram likely shows epithelial tissue (like in respiratory or digestive tracts). Cells that secrete mucus (e.g., goblet cells in epithelial linings) produce mucus to trap dust/pathogens or lubricate. "Absorbs nutrients" is for intestinal absorptive cells, "secretes hormones" for endocrine glands, "traps dust..." is more about mucus's role but the cell here (if goblet - like) secretes mucus. So the correct option is the one about secreting mucus.

Answer:

secretes mucus