Examlex
Which of the following fields would be the best candidate for a primary key field in a table of employee data?
Distilled Water
Water that has been purified by distillation, removing impurities and minerals.
Hemorrhage
The escape of blood from a ruptured blood vessel, which can occur internally or externally.
Red Blood Cells
The cells in the blood responsible for carrying oxygen from the lungs to the body's tissues and returning carbon dioxide back to the lungs.
Osmosis
The movement of water molecules through a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration.
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