Answer:
The correct answer is b. accessory digestive organ.
Step-by-step explanation:
Accessory digestive organs are the organs that help in food digestion but are not part of the digestive tract. The digestive tract includes mouth, esophagus, stomach, small intestine, large intestine, and anus.
These accessory organs in our body are tongue, pancreas, gall bladder, salivary glands, and liver. They play an important role in food ingestion and digestion. For example pancreas and liver release hydrolytic enzymes that help in digestion of complex biomolecules into simpler form. Therefore the correct answer is b.