In a shopping campaign, bidding should be higher when reaching a more granular level.

The selected answer option, True, is correct because in a shopping campaign, bidding is typically recommended to be higher when targeting more granular levels, such as specific product groups or SKUs. When advertisers focus on more specific product categories or segments, they are often aiming to optimize performance for high-priority or high-margin items. By increasing the bid at this granular level, advertisers can ensure that these important products are more likely to receive visibility and drive conversions, especially in competitive markets. Higher bids at a granular level help to secure better ad placements and increase the chances of success for the targeted products, ensuring that they are prominently featured in search results and other ad placements.