Campaign priorities determine your bids according to which rule:

• the highest priority campaign will bid, unless a lower priority bid is high enough
• if the highest priority campaign is out of budget, the lower priority campaign bids
• if the highest priority campaign is out of budget, lower priority budget is added to bids
• if you have multiple campaigns with the same bid, the lowest necessary bid will be used

Correct Answer:

• if the highest priority campaign is out of budget, the lower priority campaign bids