What option should an advertiser choose if they want to run ads solely on Facebook Feed?

Choosing manual placements is the best option for an advertiser who wants to run ads solely on Facebook Feed. When an advertiser selects manual placements, they gain the ability to specify exactly where their ads will appear, allowing for a focused ad delivery strategy. This means that the advertiser can choose to target only the Facebook Feed and exclude other placements such as Instagram Feed, Audience Network, or other Facebook placements.

By opting for manual placements, advertisers can better control their budget and ensure that their ads resonate with their intended audience in the specific location most conducive to engagement. This targeted approach can help optimize the performance of the ads by ensuring they are served in contexts that are most suitable for the campaign's objectives.

In contrast, choosing automatic placements would allow the ads to be distributed across a variety of platforms and placements, including those that the advertiser may not wish to target. Other options like Instagram Feed and Audience Network specifically focus on different platforms, which does not align with the goal of exclusively using the Facebook Feed.