What is the role of saliva in the digestion of food ?

Explanation

**Step-by-Step Solution:**

1. **Lubrication of Food:**
- Saliva plays a crucial role in the digestion of food by lubricating it. This lubrication makes it easier to chew and swallow the food.

2. **Facilitates Mastication:**
- The lubrication provided by saliva facilitates mastication, which is the process of breaking down food into smaller pieces. This size reduction is essential for easier digestion.

...