Which of the following Word tabs enables you to change margin settings?

The option concerned with changing margin settings in Microsoft Word is indeed the Layout tab. This tab is specifically designed for adjustments related to the overall structure of the document, such as page layout, margins, orientation, and indentation.

When you navigate to the Layout tab, you will find a "Margins" button that allows you to choose from predefined margin settings or create custom margins tailored to your specific needs. This is vital for ensuring that your document's text is properly aligned and that it adheres to any required formatting standards.

Other tabs serve different purposes: the Home tab is primarily for editing and styling text, the Insert tab focuses on adding elements like tables, images, and charts, and the Review tab is used for proofreading and collaborating on documents. Hence, they do not include options for adjusting margin settings.