Solution

The gizzard grinds food one more time before it enters the stomach. The crop opens into a short, muscular organ, the gizzard where the grinding of food takes place.
Crop holds swallowed food until a toothy section of the digestive tract called the proventriculus, can pulverize it.
Mesenteron also called the midgut functions mainly for digestion. It is lined with enzyme-secreting tissue and serves as the main site of digestion and absorption.
The oesophagus is also called the gullet, is the part of the gastrointestinal system between the mouth and the stomach. It connects the pharynx and the stomach. The oesophagus can contract or expand to allow for the passage of food.
So, the correct answer is option B.