Final answer:
The daily volume of saliva secreted ranges between 1 to 1.5 liters. Saliva contains enzymes, buffers, mucus, and antimicrobial compounds that aid in digestion.
Step-by-step explanation:
The daily volume of saliva secreted ranges between 1 to 1.5 liters (option B). Saliva is a complex mixture of water, ions, enzymes, glycoproteins, and waste products. It plays a crucial role in digestion, primarily through the enzyme salivary amylase, which breaks down carbohydrates. Saliva also contains buffers, mucus, antimicrobial compounds, and growth factors.