Aqueous solutions are primarily used for which of the following purposes in medicine?

Aqueous solutions are primarily used for the delivery of medication because they provide an effective medium for dissolving various pharmaceuticals. This is essential in achieving the desired bioavailability and therapeutic effect of drugs in the body. The water content allows for better absorption when administered intravenously, subcutaneously, or orally, facilitating quicker onset of action and enhanced solubility of many compounds that might not be effective in a solid form.

In contrast, while storage of drugs is important, it primarily involves maintaining the stability of the drugs, which may or may not be in aqueous form. The manufacturing of pharmaceuticals involves various processes where aqueous solutions may play a role, but they are not the primary purpose in the larger context of drug production. Lastly, the disposal of biohazardous materials is unrelated to aqueous solutions, as this typically involves solid and liquid waste management in a manner that ensures safety and compliance with environmental regulations. Thus, the primary purpose of aqueous solutions in a medical context is their role in the effective delivery of medications.