On some pages, reviews may be considered MC, and on other pages they may be considered SC. Which two categories can reviews be classified as?

• A. Main Content and Ads
• B. User-generated content and Ads
• C. Main Content and Supplementary Content
• D. Supplementary Content and User-generated content

Answer: (C)

Reviews can play two different roles depending on the page’s purpose. They can be the central material a reader relies on to understand or evaluate something, or they can sit alongside the main information as extra context that supports what’s already provided.

When reviews are the main purpose of the page—offering the primary information users seek—they are the main content. On pages where the core details (like product specs or article text) come first, reviews act as supplementary content that adds user experiences and opinions without being the page’s primary driver.

That’s why the best answer is Main Content and Supplementary Content. It captures the two functional roles reviews can have. The other options pair reviews with ads or with a broader category (user-generated content) that doesn’t reflect their dual role as either the primary content or an accompanying, supportive element.