In this example, a Sponsored Brands ad reads "Save 50% on tube socks." This is not a compliant pricing promotion. What would be a compliant promotional message?

The correct answer is "Save now on tube socks" because it is a general promotional statement that does not specify a discount amount or percentage. Sponsored Brands ads cannot make specific pricing claims like "Save 50%" or "Save $10" unless those promotions are actively running and verifiable on the product detail page. "Huge savings on tube socks" is also non-compliant because "huge" is subjective and not a quantifiable claim, which can be misleading. "Save half on tube socks" is non-compliant for the same reason as "Save 50%" – it implies a specific, quantifiable discount that must be active and verifiable. General calls to action like "Save now" are compliant as they encourage a click without making a specific, potentially outdated, pricing promise.