Answer:
Blood colloid osmotic pressure.
Step-by-step explanation:
Blood colloid osmotic pressure may be defined as the pressure that is excreted by the plasma protein especially albumin in the blood. This pressure plays an important role in the filtration process.
The level of low blood colloid osmotic pressure results in the low water level. The urine becomes deep yellow and volume is urine is also low in case of this blood colloid osmotic pressure. Sheila shows all these symptoms so her body's mechanism is affected by the blood colloid osmotic pressure.
Thus, the correct answer is option (d).