Final answer:
The correct treatment for malignant hyperthermia, a severe condition causing excessive muscle contractions and high fever, is Dantrolene, which reduces calcium release in muscle cells.
Step-by-step explanation:
Malignant hyperthermia is a potentially lethal condition, and the medication that is helpful in treating it is C. Dantrolene. Dantrolene acts by reducing the calcium release from the sarcoplasmic reticulum of skeletal muscle cells, thereby helping to alleviate the muscle contractions associated with malignant hyperthermia. Unlike the treatments for conditions such as botulism, which involve botulinum toxin to decrease the release of acetylcholine from motor neurons, or treatments for tetanus that include antitoxins and benzodiazepines, dantrolene directly targets the excessive calcium release that characterizes malignant hyperthermia.