Answer:
Blood Preservative: Sodium Fluoride, Sodium Citrate
Anticoagulant: EDTA, Heparin, Potassium Oxalate
Explanation:
These are the PLATO Answers. Sodium Fluoride is most commonly used to preserve blood, while Sodium Citrate is also used but less often and mixed with other substances.
Potassium Oxalate is most commonly used as an Anticoagulant, however Heparin and Potassium Oxalate can also be used but aren't as preferred.