To modify the header or footer for all blog posts, which layout must you modify?

• A. Main layout
• B. Blog post layout
• C. Global layout
• D. Page layout

Answer: (A)

In this setup, the header and footer are part of the surrounding shell that wraps every piece of content. The layout that defines that outer shell is the main layout, so changing it will propagate to all blog posts and ensure the header and footer appear consistently across them.

The blog post layout, on the other hand, controls how the content inside a blog post is arranged, not the site-wide chrome like the header and footer. Therefore altering it wouldn’t guarantee header/footer changes across all posts. Page layout is specific to standard pages, not blog posts, so it wouldn’t cover blog content. Global layout may apply site-wide elements in some systems, but the common and reliable way to update the header and footer for all blog posts is to modify the main layout.