ne of the following is the principal function of the liver.نقطة واحدةHelp to maintain the normal blood glucose level.Deaminate amino acids to form NH4+which is excreted as ammonium salts in the urine.Synthesize Vitamin D3 (cholecalciferol).synthesize most of the immune globulins

The principal function of the liver is to help maintain the normal blood glucose level.

Here's a step-by-step explanation:

1. The liver plays a crucial role in maintaining the body's metabolic balance.

2. One of its main functions is to store glucose (in the form of glycogen) when blood glucose levels are high, such as after a meal.

3. When blood glucose levels drop, the liver breaks down the stored glycogen into glucose and releases it into the bloodstream to maintain a normal blood glucose level.

4. This process is regulated by hormones such as insulin and glucagon.

5. While the liver does perform other functions such as deaminating amino acids and synthesizing immune globulins, its principal function is to help maintain the normal blood glucose level.

Note: The liver does not synthesize Vitamin D3. This process primarily occurs in the skin in response to sunlight.