**Core Concept**
Fresh frozen plasma (FFP) is a blood product that contains all the clotting factors necessary for normal hemostasis. It is used to correct multiple clotting factor deficiencies, especially in patients with active bleeding.

**Why the Correct Answer is Right**
FFP is the best choice in this scenario because it contains all the necessary clotting factors, including fibrinogen, prothrombin, and other factors involved in the coagulation cascade. When a patient has multiple clotting factor deficiencies, FFP can provide the necessary components to restore normal coagulation function. FFP is also useful in patients with bleeding due to liver disease, vitamin K deficiency, or warfarin therapy.

**Why Each Wrong Option is Incorrect**
**Option B:** Whole blood contains all the components of blood, including red blood cells, white blood cells, platelets, and plasma. However, it is not the best choice for correcting clotting factor deficiencies because it contains a large volume of red blood cells, which are not necessary in this scenario.

**Option C:** Packed RBCs (red blood cells) are used to increase the red blood cell count in patients with anemia or significant blood loss. However, they do not contain clotting factors and are not used to correct bleeding due to clotting factor deficiencies.

**Option D:** Cryoprecipitate is a concentrated source of fibrinogen and von Willebrand factor, but it does not contain all the clotting factors necessary to correct multiple clotting factor deficiencies.

**Clinical Pearl / High-Yield Fact**
Remember that FFP is often used in patients with bleeding due to liver disease or vitamin K deficiency, as these conditions can impair the production of clotting factors.

**✓ Correct Answer: A. Fresh frozen plasma**