Final answer:
B) Restricted cervical injection is the technique that would most likely help normalize the moisture content of an emaciated body by controlling the rate at which embalming fluid is introduced.
Step-by-step explanation:
The action that would help normalize the moisture content of an emaciated body is B) Restricted cervical injection. This method allows embalming fluid to be introduced at a slower and more controlled rate, which can more gently treat tissues and potentially hydrate an emaciated body in which tissue dehydration is a concern. Other options such as A) Hypodermic embalming, C) High pressure embalming, and D) Strong arterial solution could be too harsh for an emaciated body and might not address the moisture imbalance effectively.
On a related note, when a dehydrated human patient requires rehydration, they are typically given isotonic saline intravenously, which is at a concentration that does not cause cellular damage. This is pertinent because if a solution that is not isotonic, such as a hypotonic or hypertonic solution, is injected, it can lead to cellular damage or red blood cell destruction, as indicated by clinical scenarios where forensic analysis revealed such outcomes.