Which bid strategy would you require to frequently monitor and optimize in order to balance performance and spend?

The correct answer is “Maximize performance” bid strategy because this bid strategy requires frequent monitoring and optimization to balance performance and spend effectively. The "Maximize performance" strategy automatically adjusts bids based on the available inventory and expected performance, aiming to achieve the best possible results for the budget allocated. However, since this strategy dynamically adjusts bids, it necessitates close monitoring to ensure the performance remains aligned with the advertiser's goals, and adjustments may be needed to balance spending efficiently. This is in contrast to more static strategies like "Max bid," which doesn't require as much ongoing optimization, or "While spending full budget, maximize performance," which focuses on spending the full budget rather than optimizing for performance alone.