Angela's ready to get started with her first Smart Display campaign, but her account isn't yet eligible due to not having enough conversions in the last 30 days. What's the minimum number of conversions needed (in the last 30 days) to be eligible to set up a Smart Display campaign?

To be eligible for a Smart Display campaign, an account needs sufficient conversion data for Google's automated bidding and targeting to optimize effectively. The requirement is at least 50 conversions on the Display Network or at least 100 conversions on the Search Network within the last 30 days. This threshold ensures that the system has enough historical data to make informed decisions, leading to better campaign performance. The other options present incorrect combinations of conversion numbers and network types.