The correct answer is A. it is broken into smaller pieces.After chewing, the food is physically broken down into smaller pieces, increasing its surface area. This makes it easier for digestive enzymes to act on the food during digestion. Chewing also mixes the food with saliva, which helps soften it and starts the digestion of carbohydrates, but the main immediate effect is that food is broken into smaller, more manageable pieces for swallowing and digestion.