How do you spell-check a document in Word?

To spell-check a document in Word, the most effective method is to go to the 'Review' tab and select 'Spelling and Grammar.' This option provides a comprehensive tool that not only identifies spelling errors but also checks for grammatical issues throughout the document. Accessing the spell check through the 'Review' tab allows for a systematic review, where Word guides the user through each identified error, providing suggestions and options to correct them directly.

This method leverages Word's built-in capabilities to enhance the accuracy and professionalism of the document, ensuring that all potential mistakes are addressed efficiently rather than relying on manual checks or other less effective methods. Other options, while they may suggest various actions, do not offer the same level of automated support and comprehensive checking provided by the spell check feature under the 'Review' tab.