Final answer:
The green 'liver' inside a lobster's body is known as the hepatopancreas, an organ essential for digestion and nutrient absorption. The correct option is B.
Step-by-step explanation:
The green substance inside the body of a lobster that is often referred to as its 'liver' is actually called the hepatopancreas.
The hepatopancreas performs functions similar to those of the liver and pancreas in humans. It plays a crucial role in both digestion and absorption of nutrients.
The primary function of this organ includes the production of digestive enzymes and the absorption of digested food.
However, it is sometimes mistakenly called tomalley, which is a term used for the soft, green substance that includes the hepatopancreas but can also include other parts of the lobster's digestive system.
It is considered a delicacy, but because it is a filtering organ, it can also contain toxins or pollutants, so consumption should be approached with caution. The correct option is B.