[Solved] What is the difference between a naked call option and a covered call option? Which one is riskier and why? Physical Medium: A material substance, like fiber optic cable or copper wire, that is used to transmit data in the form of electronic signals. Reading Copy: A version of a document or book meant for review, not for final publication or sale. Hyperlink Copy: The action or feature that allows the duplication of a hyperlink, enabling it to be placed in another location for quick access. Drafts Folder: A storage location within an email application or word processor where preliminary versions of documents or emails are saved.