Final answer:
The question pertains to inserting a copyright symbol, which is not correctly answered by any of the provided options. The standard keyboard shortcut is Alt + 0169, or the Symbol gallery can be used. The copyright symbol is crucial for protecting intellectual property from plagiarism.
Step-by-step explanation:
The question asks about inserting a copyright symbol in a document. This task is usually performed in word processing software, and the correct method to insert a copyright symbol is using a specific key combination or accessing the Symbol gallery within the software. The options provided (Ctrl+C, Alt+C, Ctrl+Alt+C, Ctrl+Shift+C) suggest keyboard shortcuts, but none corresponds to the standard method for inserting a copyright symbol which is usually accomplished by pressing Alt + 0169 on a numerical keypad.
Because none of the options correctly answers the question based on standard keyboard shortcuts, you may need to access the Symbol gallery to insert the copyright symbol. This feature allows users to choose from various symbols that are not readily available on the keyboard. Remember, protecting your intellectual property with a copyright symbol is essential to prevent plagiarism and to maintain the integrity of your original works.