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Blood donations can be used to save lives for people suffering from blood loss due to traumatic injury. However, other times only certain components of the blood are needed. For example, platelets can be donated and used to help in cases where a clotting factor is missing in a patient. The fractioning of blood into its components is shown here. What experimental design was most likely used to provide evidence for the success in blood fractioning?

A Blood donations were collected and separated by their different sizes.Blood donations were collected and separated by their different sizes.
B Blood donations were collected and separated by the temperature at which they boil.Blood donations were collected and separated by the temperature at which they boil.
C Blood donations were collected and separated by their attraction to a magnetic field.Blood donations were collected and separated by their attraction to a magnetic field.
D Blood donations were collected and separated by their different densities in the mixture.

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
7 hours ago

The most likely experimental design used to provide evidence for the success in blood fractioning is:

**D. Blood donations were collected and separated by their different densities in the mixture.**

This method aligns with common techniques in blood fractionation, where components of blood (such as plasma, platelets, and red blood cells) are separated based on their densities, typically using centrifugation. The other options presented (separation by size, boiling point, or magnetic attraction) are not standard methods for blood fractionation. Therefore, option D is the most appropriate choice.