Discharged in this sentence means to perform a throwing action over the heads of the people.
I believe that would be C. Academic
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Testosterone
Growth hormone
Insulin-like growth factor
Cortisol
I believe the answer is: D. They can be stored in the body.
Unlike other similar substance, Fat-soluble vitamins cannot be dissolved in water and would give the best performance when being consumed together with foods with higher fat content.
When the body do not use all the existing fat soluble vitamins, they would be stored within the liver and fatty tissue for future use.