2. Explain what the term "blood shift" means and how it works.

Explanation:

Left shift or blood shift is an increase in the number of immature cell types among the blood cells in a sample of blood.

For all of the above, you can say that blood shift (BS) happens (blood moves from non-vital organs to vital organs) when PV happens, but quite common Freedivers are using the term BS when describing the movement of the blood to the chest cavity to protect it from increasing pressure while diving deep.

i believe it would be c: tons.