Question

albumin is a protein found in blood that helps to regulate amount of fluids in the body. what is the main function of albumin?
to provide structure
to fight disease
to maintain homeostasis
to regulate cell reactions

Explanation:

Albumin regulates body fluid amounts, which is a key aspect of maintaining the body's stable internal environment (homeostasis). It doesn't primarily provide structure, fight disease, or regulate cell - reactions as stated in the other options.

Answer:

to maintain homeostasis