Final answer:
Albumin is the blood marker that exhibits an increase due to dehydration and decreases due to the same factors as total protein, along with the additional factor of liver failure.
Step-by-step explanation:
The blood marker that exhibits an increase due to dehydration and decreases due to the same factors as total protein, along with the additional factor of liver failure, is Albumin (option C).
Albumin is the most abundant protein in human blood plasma and is synthesized in the liver. It functions to transport hormones and fatty acids, buffer pH, and maintain osmotic pressures. Concentration of albumin increases in dehydration and insulin resistant diabetes. On the other hand, concentration of albumin decreases in hepatic disorders, malnutrition, and increased excretion of albumin as seen in kidney disorders (nephrosis).
In liver failure, the liver's ability to produce albumin is impaired, leading to a decrease in its concentration.