Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: In first trimester fetuses, this organ is the primary producer of red blood cells. As blood flows into this organ through the portal vein, sugars are converted into glycogen which is stored until needed. These organs in polar bears contain toxic amounts of retinol. It secretes about a quart of bile, and a yellowness of the skin called jaundice can occur when it malfunctions. Excessive alcohol consumption can cause cirrhosis of this organ. For 10 points, name this largest gland in the body, which removes toxins from the blood.
Output:
Science