Which tag controls the maximum number of blocks in a section?

The tag that controls the maximum number of blocks in a section is "limit." This tag is essential in Shopify theme development as it establishes constraints on how many blocks can be added within a particular section. By using the "limit" tag, developers can enhance the usability of their themes and optimize performance by preventing the addition of excessive blocks, which could complicate the layout or slow down the page.

For sections that dynamically allow users to add custom content blocks through the Shopify admin, having a clearly defined limit is crucial for maintaining a clean and manageable design. It also helps in ensuring that the section remains functional and visually appealing without being overcrowded.

Other options such as "max_blocks" and variations like "block_limit" or "limit_blocks" do not accurately represent the tag used in Shopify's Liquid templating language for this specific functionality, as they are not used within the context of setting limitations for blocks in sections. This distinction reinforces the importance of familiarity with specific Liquid tags and how they apply to Shopify's structural elements.