Martha is using Sponsored Display to help drive awareness for her brand. She is measuring this by seeing if her Sponsored Display campaigns help drive viewable impressions. Which optimization strategy should Martha use to help reach the goal?

The correct answer is Optimize for reach because when Martha is using Sponsored Display to drive awareness for her brand, the primary focus is on increasing visibility and exposure to a broad audience. Optimizing for reach helps ensure that her ads are shown to as many relevant customers as possible, maximizing the number of impressions. This is directly aligned with her goal of driving viewable impressions, as it increases the overall visibility of her campaign. Optimizing for page visits or clicks, on the other hand, would focus more on driving traffic or engagement rather than simply increasing the number of impressions and exposure, which is key for awareness campaigns.