Final answer:
Albumin and fibrinogen are produced by the liver. Most globulins are also produced in the liver, except for immunoglobulins, which are created by plasma cells.
Step-by-step explanation:
Albumin, fibrinogen, and globulins are plasma proteins with distinct functions within the body. Albumin and fibrinogen are primarily produced by the liver. Albumin, the most abundant plasma protein, helps maintain oncotic pressure and transport substances. Fibrinogen plays a critical role in blood clotting. Globulins are a group of proteins that include enzymes and antibodies, and while most plasma proteins are produced by the liver, immunoglobulins (a type of globulin) are produced by specialized leukocytes known as plasma cells.
To directly answer the question, albumin and fibrinogen are produced in the liver. However, while most globulins are produced in the liver, immunoglobulins are produced by plasma cells. Thus, the correct answer to where albumin, fibrinogen, and globulins are produced is: a) Liver, with the clarification that immunoglobulins are an exception as they are produced by plasma cells.