Answer: Option A "Loss of body fluids"
Step-by-step explanation:
When the body lose blood or other fluids from the body, then the amount of blood in the body is reduced. The Hypovolemic shock happens when a sudden loss of body fluids takes place which is extremely dangerous.
Example:
At the time of delivery, there is blood loss from the body. At the time of injury there is a loss of blood from the body. These processes leads to loss of blood and body fluids.
In case of extensive burns leads to loss of body fluids.
Hence, the correct answer is option A.